Zaki hit the winner against Manchester City yesterday from the spot and Bruce said: "He is that sort of type, he has the same physique as Mark.
"He is a throwback - and that is no disrespect to the old-fashioned centre-forwards.
"Zaki played with enormous appetite, he is as strong as a bull, and both Richard Dunne and Micah Richards know they have been in a game.
"Emile Heskey and Zaki were awesome up front. When you play against Dunne and Richards you know you are going to take a physical battering."