Seriously, lets look at this objectively, Hughes has zero chance of winning this fight with the frenchie.
Frenchie has vastly superior striking,has pinpoint accuracy, great hands and kicks. Hughes has terrible striking, he just flails his arms around has zero technique at all. He doesn't have power in his punches either to test GSP's questionable chin. Hughes also has bad defence, while GSP has a good one against punches.
Hughes has great wrestling but I think with his fights with Koscheck and with Hughes himself, GSP is now equal to Hughes and CANNOT be taken down. I fully expect GSP to avoid all takedowns and even outwrestle Hughes.
I can't really say much about their Jiu Jitsu, maybe they're about even, I doubt Hughes can be that much better than GSP to help him during the fight.
GSP is stronger, faster more well rounded.........everything Hughes has, GSP does better or is at least equal.
It's a mismatch really. Matt Hughes will be brutally crushed barring a complete miracle.