As per my previous thread, the guy you pick has to kill all his teammates in order to save the world. They are all waiting in a huge adamandium room with 2 doorways and he/she has 15' before he/she enters the room. Which character of the following roster you thing could do that or which one goes further?
the roster:
Thor (classic levels)
Sentry (classic levels but no jobbing)
Hulk
Quasar
Sersi
Binary
Scarlet Witch (chaos magic levels)
Nova (he's an avengers nowadays...)
Since you didn't say that it wasn't classic version of him, I say that Hulk win.
Physically one of the most resistant, nobody can one-shot him, the strongest, heal from nothing to 100% in minutes, power always go up, etc. And it's in a cage. Nobody can run, nor can hide. He would rocks some asses. And my second bet would be between classic Thor, current Quasar and current Nova.