Ravana was a param Shiva Bhakta, whose power was so much that he tried to lift the Kailash Parvat (until Lord Shiva put down his toe to bring the mountain down again) and Hanuman was a param Rama Bhakta whose power was so much that he brought an entire Sanjeevani Parvat in order to help Lakshman. Hanuman is the avatar of Rudra (Lord Shiva), but the following incident from Ramayana might help in knowing each of their powers.
During the final Yuddha between Sri Rama and Ravana, once Sri Hanuman and Ravana come face to face. as soon as Ravana tries to attack Hanuman, Hanuman hardly gets hurt and in turn punches Ravana. This punch from Hanuman is so powerful that it knocks Ravana unconscious. After a lot of time, Ravana wakes up to find Hanuman still standing in front of him. Ravana starts praising Hanuman about his strength and that he is the first ever to flatten a parakrami (powerful person) like Ravana.
And after listening to Ravana's words, Hanuman does not react. a visibly shocked Ravana asks him the reason. Hanuman says "You are talking about my power, while all the time i am left wondering that even after my most deathly punch, you are the first person to still be alive and you have even managed to wake up and are praising me. That is why i am wondering what power are you even talking of ". Seeing all this, Jambavan comes and tells Hanuman that such a blow would have killed anyone including Ravana, but Ravana didn't die for the sole reason that his death is not in Hanuman's hands, but in the hands of Sri Rama(because of the promise made by Sriman Narayana to Jaya and Vijaya). Then Hanuman realises the actual reason for Ravana being still alive.
Since Ravana himself agreed that Hanuman is more powerful, the conclusion for your question is obvious, Sri Hanuman is the more powerful amongst the two. According to Ravan own statement : "O hero! The armies cannot protect you, even if they are in multitudes. There is no use taking a weapon like a strong thunder bolt against the monkey. There is no limit to the strength of Hanuman the son of wind-god. It is not possible to kill him, who resembles fire, by means of any weapon.
He defeated Lakshman twice using infallible Maya and Brahma spear. Obliterated the entire vanar army using Brahma's missile Tamasa and collapsed it hundred divisions from all the directions. Crushed Adityas Rudras Vasus and Maruts in the encounter single handedly. Penetrated oceanic gods army hundred yojanas and countered all their weapons. In terms of physical strength Hanuman is much superior to Ravana . In terms of power Ravana has a slight edge due to divyastras. However it's not possible for each other to kill themselves .Ravan powers falters in front of Hanuman . Hanumans brute strength alone is not enough to kill Ravana he will simply keeps coming back regenerating hundreds of heads.
Hanuman is non different from Lord Shiva, he is invincible on account of the various boons received from almost all the celestials and additionally he is a param bhakta of the Supreme Rama. Ravana pales in comparison to the radiant and incomparable Bajrangbali. Lord Hanuman was never able to use his entire strength, He possessed infinite Strength, and using the entire would have caused universal havoc. So lord Brahma restricted His power use. •Lord Hanuman spared demons like Ravan, Kumbhkaran and meghnadh, just because the none of them were supposed to die from his hands, and additionaly, Meghnagh ran away from Lord Hanuman.
एवम् उक्तो महा तेजा रावणो राक्षस ईश्वरह् |
आजघान अनिल सुतम् तलेन उरसि वीर्यवान् || ६-५९-६० 𝘛𝘩𝘶𝘴 𝘴𝘱𝘰𝘬𝘦𝘯, 𝘛𝘩𝘦 𝘩𝘪𝘨𝘩𝘭𝘺 𝘦𝘯𝘦𝘳𝘨𝘦𝘵𝘪𝘤 𝘢𝘯𝘥 𝘷𝘢𝘭𝘪𝘦𝘯𝘵 𝘙𝘢𝘷𝘢𝘯 𝘴𝘵𝘳𝘶𝘤𝘬 𝘓𝘰𝘳𝘥 𝘏𝘢𝘯𝘶𝘮𝘢𝘯 𝘷𝘪𝘰𝘭𝘦𝘯𝘵𝘭𝘺 𝘰𝘯 𝘩𝘪𝘴 𝘤𝘩𝘦𝘴𝘵.
स तल अभिहतस् तेन चचाल च मुहुर् मुहुह् |
आजघान अभिसम्क्रुद्धस् तलेन एव अमर द्विषम् || ६-५९-६१
आजघान च सम्क्रुद्धस्तलेनैवामरद्विषम् |
𝘓𝘰𝘳𝘥 𝘏𝘢𝘯𝘶𝘮𝘢𝘯 𝘳𝘦𝘦𝘭𝘦𝘥 𝘣𝘶𝘵 𝘩𝘦 𝙧𝙚𝙜𝙖𝙞𝙣𝙚𝙙 𝙝𝙞𝙨 𝙗𝙖𝙡𝙖𝙣𝙘𝙚 𝙬𝙞𝙩𝙝𝙞𝙣 𝙖 𝙢𝙤𝙢𝙚𝙣𝙩𝙨, 𝘢𝘯𝘥 𝘙𝘢𝘷𝘢𝘯 𝘸𝘪𝘵𝘩 𝘩𝘪𝘴 𝘱𝘢𝘭𝘮.
ततस् तलेन अभिहतो वानरेण महात्मना || ६-५९-६२
दशग्रीवह् समाधूतो यथा भूमि चले अचलह् |
𝘜𝘯𝘥𝘦𝘳 𝘵𝘩𝘦 𝘪𝘮𝘱𝘢𝘤𝘵, 𝘛𝘩𝘦 𝘮𝘪𝘨𝘩𝘵𝘺 𝘥𝘦𝘮𝘰𝘯 𝘬𝘪𝘯𝘨 𝙎𝙝𝙤𝙤𝙠 𝙡𝙞𝙠𝙚 𝙖 𝙢𝙤𝙪𝙣𝙩𝙖𝙞𝙣 𝙬𝙝𝙚𝙣 𝙩𝙝𝙚 𝙚𝙖𝙧𝙩𝙝 𝙩𝙧𝙚𝙢𝙗𝙡𝙚𝙨.
सम्ग्रामे तम् तथा दृष्ट्व रावणम् तल ताडितम् || ६-५९-६३
ऋषयो वानराह् सिद्धा नेदुर् देवाह् सह असुराह् |
𝘈𝘧𝘵𝘦𝘳 𝘩𝘦 𝘸𝘢𝘴 𝘴𝘵𝘶𝘤𝘬 𝘣𝘺 𝘓𝘰𝘳𝘥 𝘏𝘢𝘯𝘶𝘮𝘢𝘯, 𝘛𝘩𝘦 𝘴𝘢𝘨𝘦𝘴, 𝘮𝘰𝘯𝘬𝘦𝘺𝘴, 𝘴𝘦𝘮𝘪 𝘥𝘪𝘷𝘪𝘯𝘦 𝘣𝘦𝘪𝘯𝘨𝘴, 𝘥𝘦𝘮𝘰𝘯𝘴 𝘢𝘭𝘭 𝘳𝘢𝘪𝘴𝘦𝘥 𝘢 𝘴𝘰𝘶𝘯𝘥𝘪𝘯𝘨 𝘢𝘱𝘱𝘩𝘳𝘰𝘣𝘢𝘵𝘪𝘰𝘯.
अथ आश्वस्य महा तेजा रावणो वाक्यम् अब्रवीत् || ६-५९-६४
साधु वानर वीर्येण श्लाघनीयो असि मे रिपुह् |
𝘸𝘩𝘦𝘯 𝘙𝘢𝘷𝘢𝘯 𝘸𝘢𝘴 𝘢𝘣𝘭𝘦 𝘵𝘰 𝙍𝙚𝙜𝙖𝙞𝙣 𝙝𝙞𝙨 𝙗𝙧𝙚𝙖𝙩𝙝, 𝘩𝘦 𝘱𝘳𝘢𝘪𝘴𝘦𝘥 𝘓𝘰𝘳𝘥 𝘏𝘢𝘯𝘶𝘮𝘢𝘯 𝘷𝘢𝘭𝘰𝘶𝘳 𝘢𝘯𝘥 𝘚𝘵𝘳𝘦𝘯𝘨𝘵𝘩.
ततो मारुति वाक्येन क्रोधस् तस्य तदा अज्वलत् || ६-५९-६७
सम्रक्त नयनो यत्नान् मुष्टिम् उद्यम्य दक्षिणम् |
पातयाम् आस वेगेन वानर उरसि वीर्यवान् || ६-५९-६८
𝘯𝘰𝘸 𝘙𝘢𝘷𝘢𝘯 𝘳𝘦𝘤𝘰𝘭𝘭𝘦𝘤𝘵𝘦𝘥 𝙖𝙡𝙡 𝘏𝘪𝘴 𝘴𝘵𝘳𝘦𝘯𝘨𝘵𝘩, 𝘢𝘯𝘥 𝘴𝘵𝘶𝘤𝘬 𝘓𝘰𝘳𝘥 𝘏𝘢𝘯𝘶𝘮𝘢𝘯 𝙫𝙞𝙤𝙡𝙚𝙣𝙩𝙡𝙮 𝘰𝘯 𝘩𝘪𝘴 𝘤𝘩𝘦𝘴𝘵. Now after this, Lord hanuman was exhausted, and seeing this, Ravan immediately left the spot and attacked other monkey chiefs. Soon,Lord Hanuman Regained his breath. 𝘈𝘯𝘥 𝘮𝘦𝘢𝘯𝘸𝘩𝘪𝘭𝘦, 𝘏𝘢𝘯𝘶𝘮𝘢𝘯 𝘰𝘧 𝘦𝘹𝘢𝘭𝘵𝘦𝘥 𝘔𝘪𝘯𝘥 𝘢𝘯𝘥 𝙗𝙪𝙧𝙣𝙞𝙣𝙜 𝙘𝙤𝙪𝙧𝙖𝙜𝙚, 𝘙𝘦𝘨𝘢𝘪𝘯𝘦𝘥 𝘩𝘪𝘴 𝘣𝘳𝘦𝘢𝘵𝘩, 𝘢𝘯𝘥 𝘪𝘯 𝘩𝘪𝘴 𝘮𝘢𝘳𝘵𝘪𝘢𝘭 𝘪𝘳𝘦 𝘤𝘳𝘪𝘦𝘥 𝘰𝘶𝘵 𝘧𝘶𝘳𝘪𝘰𝘶𝘴𝘭𝘺 𝘵𝘰𝘸𝘢𝘳𝘥𝘴 𝘙𝘢𝘷𝘢𝘯, 𝘸𝘩𝘰 𝘰𝘤𝘤𝘶𝘱𝘪𝘦𝘥 𝘵𝘩𝘦 𝘧𝘪𝘨𝘩𝘵 𝘸𝘪𝘵𝘩 𝘯𝘪𝘭𝘢 𝘢𝘴 𝘧𝘰𝘭𝘭𝘰𝘸𝘴, “ 𝙄𝙩 𝙞𝙨 𝙣𝙤𝙩 𝙥𝙧𝙤𝙥𝙚𝙧 𝙩𝙤 𝙚𝙣𝙜𝙖𝙜𝙚 𝙞𝙣 𝙖 𝙘𝙤𝙢𝙗𝙖𝙩 𝙬𝙞𝙩𝙝 𝙖 𝙥𝙚𝙧𝙨𝙤𝙣, 𝙬𝙝𝙤 𝙞𝙨 𝙖𝙡𝙧𝙚𝙖𝙙𝙮 𝙞𝙣 𝙖 𝙛𝙞𝙜𝙝𝙩 𝙬𝙞𝙩𝙝 𝙖𝙣𝙤𝙩𝙝𝙚𝙧 “
After this, Ravan attacked Nila with Agni astra, charring him almost, but couldn’t take his life. after This, He turned his attention towards Lakshman. “𝙊 𝙠𝙞𝙣𝙜 𝙤𝙛 𝙙𝙚𝙢𝙤𝙣𝙨 ,𝙣𝙤𝙬 𝙚𝙣𝙩𝙚𝙧 𝙞𝙣𝙩𝙤 𝙖 𝙘𝙤𝙢𝙗𝙖𝙩 𝙬𝙞𝙩𝙝 𝙢𝙚, 𝙘𝙚𝙖𝙨𝙚 𝙛𝙧𝙤𝙢 𝙛𝙞𝙜𝙝𝙩𝙞𝙣𝙜 𝙩𝙝𝙚 𝙢𝙤𝙣𝙠𝙚𝙮𝙨!” 𝘈 𝘧𝘪𝘦𝘳𝘤𝘦 𝘣𝘢𝘵𝘵𝘭𝘦 𝘵𝘢𝘬𝘦𝘴 𝘱𝘭𝘢𝘤𝘦 𝘣𝘦𝘵𝘸𝘦𝘦𝘯 𝘭𝘢𝘬𝘴𝘩𝘮𝘢𝘯 𝘢𝘯𝘥 𝘙𝘢𝘷𝘢𝘯, 𝘸𝘦𝘳𝘦 𝘣𝘰𝘵𝘩 𝘎𝘢𝘷𝘦 𝘦𝘢𝘤𝘩 𝘰𝘵𝘩𝘦𝘳 𝘢 𝘵𝘰𝘶𝘨𝘩 𝘵𝘪𝘮𝘦, 𝘉𝘶𝘵 𝘵𝘩𝘦 𝘦𝘯𝘥, 𝘓𝘢𝘬𝘴𝘩𝘮𝘢𝘯 𝘦𝘯𝘥𝘴 𝘶𝘱 𝘨𝘦𝘵𝘵𝘪𝘯𝘨 𝘪𝘯𝘫𝘶𝘳𝘦𝘥 𝘣𝘺 𝘢 𝘴𝘱𝘦𝘢𝘳, 𝘽𝙧𝙚𝙖𝙩𝙝𝙚𝙙 𝙛𝙞𝙧𝙚. 𝘌𝘷𝘦𝘯 𝘵𝘩𝘰𝘶𝘨𝘩 𝘙𝘢𝘷𝘢𝘯 𝘭𝘪𝘧𝘵𝘦𝘥 𝘏𝘶𝘨𝘦 𝘮𝘰𝘶𝘯𝘵𝘢𝘪𝘯𝘴, 𝘏𝘦 𝘤𝘰𝘶𝘭𝘥𝘯’𝘵 𝘭𝘪𝘧𝘵 𝘓𝘢𝘬𝘴𝘩𝘮𝘢𝘯.
𝙏𝙝𝙞𝙨 𝙨𝙘𝙚𝙣𝙚 angered 𝙇𝙤𝙧𝙙 𝙃𝙖𝙣𝙪𝙢𝙖𝙣, 𝙖𝙣𝙙 𝙝𝙚 𝙧𝙪𝙨𝙝𝙚𝙙 𝙩𝙤𝙬𝙖𝙧𝙙𝙨 𝙍𝙖𝙫𝙖𝙣
ततः क्रुद्धो वायुसुतो रावणं समभिद्रवत् |
आजघानोरसि क्रुद्धो वज्रकल्पेन मुष्टिना || ६-५९-११४
𝘛𝘩𝘦𝘳𝘦𝘶𝘱𝘰𝘯, 𝘛𝘩𝘦 𝘦𝘯𝘳𝘢𝘨𝘦𝘥 𝘏𝘢𝘯𝘶𝘮𝘢𝘯, 𝘴𝘰𝘯 𝘰𝘧 𝘸𝘪𝘯𝘥, 𝘙𝘶𝘴𝘩𝘦𝘥 𝘶𝘱𝘵𝘰 𝘙𝘢𝘷𝘢𝘯, 𝘢𝘯𝘥 𝘴𝘵𝘶𝘤𝘬 𝘩𝘪𝘮 𝘢𝘯𝘨𝘳𝘪𝘭𝘺 𝘰𝘯 𝘩𝘪𝘴 𝘤𝘩𝘦𝘴𝘵, 𝙏𝙝𝙚 𝙥𝙪𝙣𝙘𝙝 𝙧𝙚𝙨𝙚𝙢𝙗𝙡𝙞𝙣𝙜 𝙖 𝙩𝙝𝙪𝙣𝙙𝙚𝙧 𝙗𝙤𝙡𝙩. 𝘉𝘺 𝘛𝘩𝘢𝘵 𝘥𝘦𝘢𝘥𝘭𝘺 𝘣𝘭𝘰𝘸, 𝘙𝘢𝘷𝘢𝘯 𝘳𝘦𝘦𝘭𝘦𝘥, 𝘧𝘦𝘭𝘭 𝘰𝘯 𝘵𝘩𝘦 𝘨𝘳𝘰𝘶𝘯𝘥, 𝘢𝘯𝘥 𝘪𝘮𝘮𝘦𝘥𝘪𝘢𝘵𝘭𝘺 𝘭𝘰𝘴𝘵 𝘩𝘪𝘴 𝘤𝘰𝘯𝘴𝘤𝘪𝘰𝘶𝘴𝘯𝘦𝘴𝘴. 𝘼 𝙡𝙤𝙩 𝙤𝙛 𝙗𝙡𝙤𝙤𝙙 𝙨𝙥𝙪𝙧𝙩 𝙛𝙧𝙤𝙢 𝙝𝙞𝙨 𝙚𝙮𝙚𝙨, 𝙚𝙖𝙧𝙨, 𝙢𝙤𝙪𝙩𝙝 𝙖𝙣𝙙 𝙛𝙖𝙘𝙚. 𝘈𝘧𝘵𝘦𝘳 𝘓𝘰𝘳𝘥 𝘩𝘢𝘯𝘶𝘮𝘢𝘯 𝘵𝘰𝘰𝘬 𝘭𝘢𝘬𝘴𝘩𝘮𝘢𝘯 𝘪𝘯𝘵𝘰 𝘵𝘩𝘦 𝘱𝘳𝘦𝘴𝘦𝘯𝘤𝘦 𝘰𝘧 𝘓𝘰𝘳𝘥 𝘙𝘢𝘮, 𝘢𝘯𝘥 𝘵𝘩𝘦 𝘴𝘱𝘦𝘢𝘳 𝘰𝘧 𝘙𝘢𝘷𝘢𝘯 𝘳𝘦𝘵𝘶𝘳𝘯𝘦𝘥 𝘣𝘢𝘤𝘬 𝘵𝘰 𝘩𝘪𝘴 𝘤𝘩𝘢𝘳𝘪𝘰𝘵, 𝙍𝙖𝙫𝙖𝙣 𝙧𝙚𝙜𝙖𝙞𝙣𝙚𝙙 𝙝𝙞𝙨 𝙘𝙤𝙣𝙨𝙘𝙞𝙤𝙪𝙨𝙣𝙚𝙨𝙨.𝘦𝘷𝘦𝘯 𝘢𝘧𝘵𝘦𝘳 𝘓𝘰𝘳𝘥 𝘙𝘢𝘮 𝘮𝘰𝘶𝘯𝘵𝘦𝘥 𝘰𝘯 𝘓𝘰𝘳𝘥 𝘏𝘢𝘯𝘶𝘮𝘢𝘯, 𝘙𝘢𝘷𝘢𝘯’𝘴 𝘥𝘦𝘢𝘥𝘭𝘺 𝘸𝘦𝘢𝘱𝘰𝘯𝘴 𝘤𝘰𝘶𝘭𝘥𝘯’𝘵 𝘏𝘢𝘳𝘮 𝘵𝘩𝘦 𝘴𝘰𝘯 𝘰𝘧 𝘸𝘪𝘯𝘥. “𝙀𝙫𝙚𝙣 𝙬𝙝𝙚𝙣 𝙨𝙩𝙪𝙘𝙠 𝙗𝙮 𝙩𝙝𝙚 𝙙𝙚𝙢𝙤𝙣’𝙨 𝙖𝙧𝙧𝙤𝙬 𝙞𝙣 𝙩𝙝𝙚 𝙗𝙖𝙩𝙩𝙡𝙚, 𝙏𝙝𝙚 𝙫𝙞𝙜𝙤𝙪𝙧 𝙤𝙛 𝙃𝙖𝙣𝙪𝙢𝙖𝙣 𝙬𝙝𝙤 𝙬𝙖𝙨 𝙚𝙣𝙙𝙤𝙬𝙚𝙙 𝙬𝙞𝙩𝙝 𝙣𝙖𝙩𝙞𝙫𝙚 𝙨𝙩𝙧𝙚𝙣𝙜𝙩𝙝, 𝙞𝙣𝙘𝙧𝙚𝙖𝙨𝙚𝙙 𝙩𝙞𝙡𝙡 𝙛𝙪𝙧𝙩𝙝𝙚𝙧.” So you see, Lord Hanuman inflicted more Damage upon Ravan, and even Ravan’s arrows couldn’t put him down(Although it pissed off Lord Ram). Lord hanuman could have easily Killed Ravan had he wished so, But didn’t do it for the sake of Lord Ram.
H𝙚𝙧𝙚’𝙨 𝙖 𝙙𝙚𝙨𝙘𝙧𝙞𝙥𝙩𝙞𝙤𝙣 𝙬𝙝𝙞𝙘𝙝 𝙩𝙝𝙚 𝙙𝙚𝙢𝙤𝙣𝙨 𝙂𝙖𝙫𝙚 𝙩𝙤 𝙧𝙖𝙫𝙖𝙣 𝙖𝙗𝙤𝙪𝙩 𝙡𝙤𝙧𝙙 𝙃𝙖𝙣𝙪𝙢𝙖𝙣 :for that monkey who you see there, resembling an intoxicated elephant, who in strength and fury is able to churn up the ocean itself, it is he who came to Lanka to find Seetha and spy on you, O, Lord! See that monkey, who was seen earlier and who appears here again. This monkey, by whom the ocean was traversed, is the eldest son of Kesari. He is known as the son of wind-god and famously called as Hanuman. This excellent monkey can assume any form at will. He is endowed with a good strength and form always moving like the wind-god, having an uninterrupted mobility."
"While yet a child, seeing the sun rise, he desired to eat it and took off to a distance of three thousand yojanas (or twenty four thousand miles) reflecting: 'I shall seize hold of the sun and my hunger will not be appeased otherwise' and they say, he leapt up (into the air) intoxicated as he was with his own strength. Without even reaching the sun, which is most unassailable even to celestials, sages or demons, he however fell on a mountain, where that radiant orb rises.
One of the jaws of this monkey who fell down on the head of the rock, was a little fractured. For this reason, because of his strong jaw, he is called Hanuman. This monkey is known to me actually through the words of my bosom friends. It is not possible to describe his strength or physical form or glory. He alone wants to destroy Lanka by his valour. How do you forget this monkey by whom this fire was lighted and is still blazing up Lanka. Ram Lkshman Janaki Jay Bolo Hanuman Ki
