BTW it was hilarious you making up that it was Sentry's power that reverted him with absolutley nothing in the comic to back it up.
Plus someone once posted a link to an interview on this board with the writer where he said they exhausted themselves.
The author states that the Hulk & Sentry 'forced' each other to revert. He does not
say that it was from exhaustion. Rather, he denotes that it was the other combatant's POWER that forced them to revert. The Sentry's power has a long-established history of calming, soothing and pacifying the angry Hulk. And what do we see on the page? We see the angriest Hulk ever become calm, centered, peaceful and self-aware right there on the page (and as Hiroim describes). Nothing about exhaustion, but rather, enlightenment.
And if you don't think that's in the comic itself, you need to read it again...