Comics actually AREN'T incredibly inconsistent. You're over-exaggerating.
They are pretty inconsistent.
Still the best evidence that Thor didnt really just up and kill Sentry, apart from everything Bendis has said on the subject, is that there is a clear look of surprise/shock on Thor's face when we see Bob's corpse after that final blow.
Its a little subtle but Copiel uses three parallel "expression lines" to indicate shock. It happens consistently at other times during Siege when a character is surprised and they can be seen above Thor's head when Bob suddenly just dies after nothing had been slowing him down previously.
Sentry wasn't reacting to Thor's hits because Thor wasn't hurting him. Which is why when he hits him with the first attack and he doesn't move, the artist zooms in on Thor's expression. If you remember earlier in the event Thor manhandled Sentry.
I dont think Thor manhandled Sentry earlier on. Sentry drove him into the dirt and then passively stood over him doing nothing until Thor knocked him away. Thats not manhandling, or evidence of superiority in my book.
NOBODY that Sentry was fighting was able to inflict ANY damage in that last encounter until they were powered by the Norn Stones. So again, I'm saying ANY way you interpret this there is no scenario where it was intended in the story that Thor killed Sentry by himself under his own power. Either the Norn Stones wore him down, or Thor has become powerful enough with the use of Norn Magic to kill him, or the when he grabbed Thor he wasn't at full power because he was still making the full transformation from Bob back into the Void, there are alot of ways you can interpret it but Thor killing him under his own power ISN'T one of those and bringing up random instances of PIS and inconsistent writing doesn't change that.
I'm not going to write off Thor's high showings from throughout his career as PIS - thats a philosophy of this site I dont buy into at all. But in this instance it seemed that Sentry died because he wanted to. Kind of like what The Void said when Bob tried to kill himself in the sun - it wasnt going to work because he didnt really want it yet.
you really dont like thor do you...
you discredit every thing thor does ALWaYS