I think Silva has the current MW roster on lock and will win barring a lucky punch or submission.
His weakness is wrestling and Sonnen is definetly the best wrestler in the division and that was his greatest challenge.
I think there is only one fighter who could stand a 35/65 chance of beating Silva and that is by striking.
His name is Vitor Belfort!!
For a title fight that actually threatens the Silva dominance we need Belfort to win one more fight then get granted Silva/Belfort 2.
Franklin,Gouveia,Maia,Kharitonov,Hunt,Liddell,Pari syan,Hardy,Shlemenko,Machida,Gomi,Bustamante,Evans ,Edgar,Hathaway,Bonnar,Murray,S.Carter,Ludwig,Pett is,K.Gill,Sobral,Mousasi,D.Cruz,Arona,Nogueiras,Co te,Ole Laursen,Kawajiri,Sakuraba & K1 Lebanner!