Optimus, Megatron, Sentinel and Shockwave have almost the same height, could it be something with they height that they're skilled figters?. Bumblebee is also a skilled fighter, but he can't win a fight againts one of them i just mentioned, that's logical he's too small, but does it really matter?. Grindor was big, but it seems that he was too slow in catching Optimus counter attacks, so it's not so good to be in that height huh. The Fallen is much bigger, still it looks to me that Megatron is stronger. Regardless a cybertronian is smaller or bigger doesn't really matter, or it's if you are near Optimus height, you're superior then others. Let me know what you think.