Iwelumo has now gone 15 games without a goal after a run of 15 in 16 matches, but played a crucial role in wins over Crystal Palace and Sheffield Wednesday last week.
He said: "Sylvan keeps popping up and sticking the ball away, that's what he's all about.
"I've been pleased with my own impact over the last two games, but the most important thing is that we've picked up six points.
"If we are winning games it doesn't matter who is scoring the goals and I'm more than happy.
"You have your own personal aims and goals in games, but there is a bigger picture than individuals at the moment."