I doubt he's criticizing your accuracy. I think he's pointing out that most people consider QBR to be a joke. It's formula isn't known and it's results are pretty laughable.
I'll show you:
http://espn.go.com/nfl/boxscore?gameId=330905007
83.6 QBR for Manning
http://espn.go.com/nfl/boxscore?gameId=331027013
96.2 QBR for Pryor
That's right. On ESPN's QBR scale, Pryor's 88 passing yards, 0 passing TDs, 2 Ints, 25.7 passer rating game is better than Peyton Manning's 462 yards, 7 passing TD, 0 Int, 141.1 passer rating game because Pryor had 106 rushing yards and a TD.
It's a really bad stat. It's over-inflates the numbers for running QBs. Which is nuts. And it puts too much emphasis on certain things. It's a really poor metric.
What is an "It Factor"?
As far as the bowl game goes, a lot of people mistake yelling at a guy as leadership. Manziel may have been trying to lead but he wasn't doing it the right way with Mike Evans when they showed them. Great leaders know how to alter their style for individual people. With a hothead like Evans, you don't grab him and start yelling in his face. That's not productive. He's going to get more mad and tune you out.
With a guy like Evans, you let him simmer down some and then you calm him down and get him focused. It's the more stoic people that you want to get fired up by yelling at them. Those are the guys that respond to that. When they start to get down, you get them pumped up. You get them emotional.