Originally posted by Bentley
Thanos loses without amping and may even lose with it as we have never seen the limits of how much he can get amped. WWH is on a high base level and he can continue increasing, we can only make speculations of how quickly can Thanos amp himself compared to Hulk's rage.
Thanos with amping takes it. Odin himself said that Thanos was tapping into an unlimited power source, meaning that basically Thanos can make himself as strong, or as durable, as he wants for a given situation.
Thanos even beat up a clone of himself easily by amping himself. He can amp his durability enough to take concentrated blasts from Odin who can destroy galaxies. He can amp up his strength enough to mop the floor with top tier brawlers like they are children.