That really is a bizarre conclusion. The thought that Tyler Phommachanh played well enough the prior two games for you to conclude he was light years better than Steven Krajewski is just dumb.
Both showed weaknesses. Both showed potential. Given the level of competition the last two and a half games, neither showed that they can be an average BCS QB (meaning they could start for a team in the 60s), but both showed glimmers of potential to get there. Not consistently good enough decision making yet by either, and, more troublesome, far too many inaccurate short throws by each.
If all one has to go on is this year's game films, you could argue that either played better. But arguing they are on totally different levels -- please.