Pulver is pretty good, well he used to be. Hard to say... sometimes these older guys come back and die a fast death (Gracie, Tank Abbott, a few others...) but Pulver isn't old or anything. I'd have to see him go thru somebody before I could say... Al i know is he beat Caol Uno, Dennis Hallman, and BJ Penn as a champ, and never lost the belt, just left the UFC. He's got a nasty left hook... plus he's a militech guy so i'm not sure about him and hughes fighting.....
I bet he could run through sherk, and hang but lose to st.pierre but like i said, gotta see a refresher fight first.