Shiva :- Pashupatastra aka Roudra(on the context of Mahabharata)
‘I will give. O Pandava! My own weapon, roudra, will always be present before you.’ Satisfied, the lord granted me that pashupata weapon. Having given me that eternal weapon, Mahadeva told me, ‘This should never be used against humans. O Dhananjaya! This powerful weapon should only be used if you are hard-pressed. It can be used to counter all other weapons.’
- Shiva used it to kill tripuras and also in many other occasions against demons. Arjuna used it to kill Kalakeya/Poulomas. Vishwamitra used it Against Vasishta..According to upamanyu it is superior to Brahmastra and Narayanastra (but doesn't mean it's superior to Brahmashira or Vaishnava)
Vishnu:— Vaishnavastra.
- On paper it's equally powerful to Pashupatastra. Basically says same thing that No one is immune to This Weapon
- Krishna used it Against Varuna and Forced him to accept defeat, Rama used it to destroy parasurama's merit. Bhagadatta used it Against Arjuna.
Brahma:— Brahmastra(on the context of Ramayana).
Throughout the epic Ramayana , brahmastra is Shown as The Ultimate weapon more powerful than Any other even Brahmashira. And there's a Feat to back this Claim. Vishwamitra used it as a Final Resort against Vasishta after all his Weapons Including Pashupatastra were Neutralized..
Brahmashira(on the context of Mahabharata).
- According to Drona there is no other weapon superior to Brahmashira.
- It is Same Power as Pashupata as The Statements glorifying both these weapons are Almost exactly similar.
According to Ramayana, Brahamstra was the most powerful.
When coming to Mahabharata, Brahmastra is Nerfed AF and Pashupatastra , Vaishnavastra and Brahmashira are Equally Powerful…