Good question. I actually thought about this before, but one think about Cus' "peak-a-boo" style is that you have to be extremely athletic because it requires alot of hip movement, and even though Tua matches up well with Tyson as far as power and size, I'm not so sure he was as athletic as a prime Tyson to where he could move his upper body as fast, upper body being his hips moving side to side and moving his head in a circle as well as Mike.