Is the Promethean Knight's design based on Megatron?

Is the Promethean Knight's design based on Megatron?

I couldn’t help but wonder if Halo’s Promethean Knights are some kind of distant cousin to the fearsome Decepticon leader, Megatron. They seem to share some of the same characteristics – except for the fact Megatron is a robot and the Promethean is a Forerunner…..

What do you think? Am I stretching it a bit? You disagree? Don't be such a Negatron.