Tbf, a weakened Sentry defeated World War Hulk. I say weakened because:
-The Sentry is weakened if he has confidence issues. He had been deliberately refraining from fighting Bruce Banner and was even hesitant to fight. He definitely wasn't very confident.
-His mental state as well. At the time he was definitely not in the best state of mind. Especially since he was fighting his best friend.
-His three personalities weren't merged together, if I remember correctly, so he wasn't at full power either.
And WWH was stomping literally all the X-men and Avengers simultaneously. If Sentry can keep up with him while that weakened I think WWH stands a good chance.
There's also the fact that World War Hulk is said to be
much stronger than before, meaning his AP should be decently higher than normal. Further proof for that is here, when the Maestro mentioned how Bruce Banner had
never realized his full potential. During the fight with the Hulk, Maestro tanked a punch from him point-blank and felt nothing. The only time where Maestro was challenged during the fight was when the
Hulk kicked him in the balls (I'm not making that up). Maestro then snaps the Hulks' neck immediately and with no difficulty. We later on see that due to the neck-snap the Hulk can't even move.
Maestro also explicitly mentions how much experience he has over the Hulk, and how he could predict his every move. Despite Maestro and Hulk having equal speed in that fight, Maestro dodged nearly every attack while
joking and laughing. He didn't give a shit. That was a Hulk whose intelligence was high, btw, so WWH would get similarly shit upon as well. And since this Maestro wouldn't be fooling around, I can't see WWH ever hitting him.
So yeah. Maestro is wayy smarter, can't be hit, and has arguably equal AP via statements. He could just walk up to WWH and snap his neck, which DID daze the actual Hulk long enough for Maestro to haul him across the city and then chain him. I think a fighter being knocked out for 30 minutes counts as a win, yes? (Cherry on top is that Maestro directly says that the
Hulk cannot regenerate his brai, so he would just kill him by choking him, possibly.)