CFB Film Room tries to be fair with this:
The problem comes when you take a second glance.
It’s only fair to note that Georgia hasn’t played a ranked team yet, while LSU has faced two. But if you strip that difference out of their numbers, it still turns out that Burrow’s passer rating against unranked opponents is nearly forty points lower than Fromm’s.
What’s got to be really scary for LSU, though, is this.
Fromm’s passer rating in the third quarter this season is a ridiculous 294.54. (It’s a relatively paltry 246.27 in the fourth, but seeing as he’s only attempted six passes all year in that situation, I’m inclined to give him a pass.) Burrow’s comparable passer ratings are under 100 in both quarters.
LSU needs to keep this game close in the second half so that it doesn’t have to rely on a passing attack to win. That’s likely going to mean in part bringing Fromm down from his usual performance level.