Then the GAME should represent it. Like I said, if 2k5 didn't represent injury/fatigue - then that's the problem. Not that someone is doing something that is not cheating/hacking (which is what I consider "dishonorable").
And if Portis never returned kicks, we don't know one way or another. There's no statistical or any other proof of it either way.
Yes, not all great HBs are great KR, but not all HB suck as KR either. One doesn't prove the other.