You ask for logic, you'll get logic:
(Let's start with: The Sentry calms The Hulk)
1) Void beat The Hulk who could not get angrier/stronger
2) The Sentry beat The Void
3) The Sentry could not beat an hulk who could get angrier/stronger
4) The Sentry all out was koed with no more power and life; Green eyes Bruce/Hulk was the last man standing
5) at that point Bruce, changed again into the hulk, could have killed Sentry
You don't want to accept hulk beat Sentry ? Ok, Bruce beat Bob (not that i agree with but...) so you MUST accept : Hulk > Sentry.
Think two engines.
Thinks now about two cars going at the same speed in a contest of speed but at the end of the competition one has the the burned engine, while the latter goes faster and faster. No contest about who's the best of the two, right ?