DanielRPK on Sentry in Thunderbolts*: There's a good explanation why he doean't kill them. The Sentry in the movie has a no-kill rule. So instead he just kick their asses
People obsess too much about power scaling imo. Is Sentry much more powerful than any other character on the Thunderbolts? Yes. Could he kill them all with ease? Yes. But then it’d be over in 10 minutes and we wouldn’t have a movie. If the writing and performances are good, I can forgive a lot of power scaling issues.