The QB rating is not the most overrated stat in the game. That would be the 40 time. It isn't the best and only way to evaluate a QB, but it gives a decent idea of performance. I don't rely on it alone to judge a QB and I don't see how anyone can just ignore it. It is made up of important aspects of the game such as completions percentage, yards, TDs and interceptions. Would you ignore QB rating if Bledsoe came in with a 80 plus number during the playoffs instead of his paltry 54?
I don't understand why you think I am trying to have it both ways. In the big games such as the NFC conference championship games and Superbowls, Aikman was at his best. Bledsoe was not. System or not. I have no problem with Aikman being a system QB. He played the system well, especially in the biggest games. Bledsoe has not. The system does not call for Bledsoe to throw twice as many interceptions than TDs in the playoffs. Troy was just as integral to winning those big games as Emmitt, Michael, the O-line and the defense. He held his own and then some. Bledsoe has not.
How about I look at it another way? Bledsoe does not play as well in the post season as he does in the regular season. Aikman played better in the post season than in the regular season. This time the QB rating can be used just to show the relative difference in play. Troy Aikman regular season 81.6, playoffs 89.0. Drew Bledsoe regular season 77.3, playoffs 54.9. So QB ratings mean nothing?