I actually feel the opposite. I'm not saying GT will win, but to me, the team that matches up best with FSU has an elite offense more than an elite defense.
FSU is going to be stronger on defense than offense this year, IMO. So getting in a rock fight with them probably isn't the best strategy, because that's the game they're going to want to play. To me, if I have to pick one strength vs the other, I'd rather be stronger on offense, because that's strength on strength, and if you're going to beat a team that's "better" than you, you want to do it with the strength of your team leading the way.
FSU's defense is going to limit even the good offenses they play. They're going to smother the bad offenses. Yeah, FSU should have some success against GT's defense, but GT's offense should have some success against their defense, too.
I see this as a high scoring game. The total is 55.5. For a team to upset FSU, they're going to need to have success against their defense, and hope the offense sputters for a quarter or a half, which is definitely possible.
I like the matchup GT has against them better than I do for someone who is going to lean on their defense and hold-on on offense. Go drop 30 on them and see if DJU and the retread crew can keep up.