My choice is Florida. Their offense did have a good game, no doubt. But here's the thing I'd point to; be cautious here.
Over the last ten years Florida is the first team to allow an opponent 400 yards passing, a QB completing 70% of his attempts with a 13 yards average per attempt...and win.
Stats show that's happened 17 times over the last decade. Those other 17 teams all lost.
I've never been terribly impressed with Todd Grantham as a defensive coordinator but those numbers are not indicative of his defenses in the past.