Whose top ten? Lot of organizations put out top tens. They weren't really top ten guys, or top 30, and Stewart would have beaten either. Zolkien, buy the way, might have beaten Peter.
Can't see how Alex attacks so aggressively vs Peter without getting KTFO'd. Neither were particularly special, but Peter's style is all wrong for Stewart and he absolutely has the power to put him away.
Stewart seemed to be a slow starter, if he gets through the first 2 rounds he wins. Peter wasn't that good
Stewart had a lot more boxing skills than Peter and if he can avoid the big shots (which I think he would be able to with faster footwork) I see him boxing to a comfortable UD. Also, Botha was mentioned in an earlier post. I for one believe that Botha outworks Peter over 12 rounds as well. He was a lot tougher and more skilled than some give him credit for.
So does speed. While not the most swift of foot, Stewart would have no problem avoiding the plodding Peter imo.