The thing with this fight is, sure GSP is a wrestler, but Chael is a way better wrestler than GSP. Sure Chael is not a better overall mixed-martial artist, but his wrestling is definitely more impressive. I really don't think the Sonnen fight is fair to use as a reason why GSP would dominate the ground. We saw how easily Koscheck stopped GSP's takedowns and remembers, Chael only got 2 out of 3 takedowns on Anderson in their fight. The most anybody has really got on Silva in a fight. Despite what people thing, Anderson's TDD is actually pretty damn good, he's just not afraid to fight off of his back so therefore he doesn't do everything in his power to stop a TD.
What I'm try to say though is...this would be a good fight because there's a lot of unanswered questions and unknown factors in this fight an it would really show who the P4P king is. I see no problem with it.
If Somebody's telling ME! that about my wife...I'm sorry sir, but I'm gonna break, your leg.