I'm mean should he really have able to do this?

To someone who can do this?

I mean, I'm not saying terrax would beat sentry, but one shot him?

I just feel as though that whole fight was PIS, anyone else agree with me.

yep, sentry is really just a walking plot device

The Sentry is written very powerful.

I think you can write that up as Terrax having absolutely /no idea/ who the Sentry was or his true power level.

That said, the character was only a walking plot device to Bendis. :P

sentry is by far the most powerful character in marvel universe. if he can easily defeat molecule man then yes he can pull this off easily. sentry is capable of doing more than this feat he did now. don't be surprise if sentry break thor's hammer or cap's shield. lol