Stann, Rivera, and Leben all have power yes, but their hand speed is nothing compared to Vitor's. Their killer instinct isn't comparable to Vitor's, Bisping's chin is pretty solid but if Vitor clips him he better cover up and do a good job of it because Vitor will swarm him quickly.Stated by Thelyotolegion.
Stann, Rivera killer instinct lesser than Belforts? i politely disagree, I would question Leben only because of his last couple of performances.
Again politely i ask why make such a statement about the 'killer instinct'?
They definetly don't have the smae killer instinct, Stann is much more composed and picks his shot while Vitor just swarms.
Just watch Vitor vs Akiyama and Stann Vs Leban or Santiago.