I feel like I’m trying to add realism, but maybe I’m being contrary. To me, it’s mainly a myth that Thompson did so much better in the Arkansas game. Card was 8/15 for 61 yards against aggressive rush that got home almost every time. Plus, he had important balls just dropped. Thompson was 5/8 for 57 yards in garbage time against second stringers while Arkansas was already partying on the sidelines. So, yes, CT got 2 TDS (via running backs), and Card got one, plus at least one missed FG if I recall.
There is nothing to indicate Thompson would have made 1% difference if he had the first 3 quarters, got rocked over and over, and Card came in when we were down 30-7.
So, what was painfully obvious to me is that no QB short of Joe Montana was going to move the ball against Arkansas that day with that OL.
Having been humiliated like that, I agree that starting CT was needed to give hope for change and symbolically get a fresh start. But I don’t think there was an important difference that day, and as I have posted before, Card’s performance against ULa was more impressive than CT’s performance against hapless Rice.
With all that said, we should stay with CT because perceptions and mythology matter—to the other players, the fans and the press. But as for comparing the two specific QBs, Card is the one who is like what Alabama, Ohio State, and Clemson have used to win it all.