The difference is that Sentry can put his face back on.
Thanos has insane durability, but he's not a Cosmic Deadpool.
If you can manage to rip his heart out, he dies.
Sentry has shown Molecule Man Power-Set potential in the past.
And he appears to be at the top of his evolution right now.
I don't see what Thanos can do to keep him down in a straight up brawl.
Originally posted by Golgo13
Nothing here Thanos can't replicate.
NOT true... Whatsoever
Although, DSENTRY stated on panel that he wasn't going to kill him; because he wanted him around for later on. He whilst holding back stilled KO'd THOR with one Heat vision blast.
Where as THANOS who was most definitely wasn't holding back; for that's rarely his style. Was unable to do the same with his Heat Vision blast.