I don't believe that Clemson is better than UGA, at least, not in any way that I would feel comfortable wagering on one versus the other. Of course it's all hyperbolic, so it really doesn't matter. With that said, I do think that Clemson is a very good team and perfectly capable of beating us if things go their way.
However, the only team they played all year with athletes even remotely comparable to their's is A&M. I'm not saying that was the best team they played all year, I do think ND takes that crown, but they simply haven't faced teams with NFL caliber athletes across the roster. Honestly, there aren't that many teams that have that, but we've faced LSU, Auburn, UGA and Oklahoma (on offense) that does.
The point I'm trying to make is that it's difficult to really know how good Clemson truly is and how closely they compare to us given the competition they have faced so far.