I'm not too sure about that. Sentry from my perspective has always appeared to be highly resistant to cosmic, and energy attacks. The problem isn't in putting him down, it's in keeping him down. I think that any Sentry would do extremely well against Annihilus.
I've said this before, but the Void is just his darkside. He should quite literally be capable of doing anything the Void has done. It's not an alternate being, just a split personality made manifest.
__________________ Chicken Boo, what's the matter with you? You don't act like the other chickens do. You wear a disguise to look like human guys, but you're not a man you're a Chicken Boo.
Pretty much so. It's just that in general the Void lacks the restraint that the Sentry has.
I mean when Sentry needs to fight with his all he will.
Heck he has defeated the Void himself twice without no outside help. I always like to believe that the Sentry is more powerful than the Void. Or rather he just has that edge over the Void for some reason. Whether it be actual power or sheer will I think he has something more.
Death Sentry wins. I think the void is now gone from him isn't it?
Void would also win.
But old regular Sentry not in void mode would lose as often as not. His power levels varied wildly and depended too much on basically how he was feeling. Although as others have stated, actually keeping him down might be difficult.
Both Annihilus and Sentry treated powerful Heralds like fodder (Annihilus - Gladiator and Sentry - Thor). I'm undecided on this one. Depends on how Annihilus mind games work on Sentry or the CR.
He fought Thanos in the recent Infinty relativity book, where he had grown stronger the longer he had the powers along with the control rod. Thanos eventually beat him down, but Thanos stated the new Annihilus was at least as powerful as him.
If Annihilus is as powerful as him then how did he end up beating him down?
__________________ Chicken Boo, what's the matter with you? You don't act like the other chickens do. You wear a disguise to look like human guys, but you're not a man you're a Chicken Boo.
He didn't beat him down. Hulk ran throughout half of the comic because Annihilus used his fear power against him and by the end, Hulk was getting blasted. The fight was lame and the entire Thanos vs Hulk showing was Hulk being manipulated via mind game. Hulk hit him three times damaging him with the second punch. The rest of the fight was all mind games.