Wanderlei Silva would NEVER lose to Vitor Belfort......ah crap.....well again at least.
Right now, with their present size and skillsets at say a catchweight of about 195 or MW, Wand's got the superior furocity and mental skillset to go along with an overpowering muay thai clinch, I think he's still got enough to bully Vitor around, seeing as how Wand's weaknesses have always been grapplers and distance fighters, neither of which would play into Vitor's forward moving striking.
MY MMA RANKINGS
HW Velasquez Cigano Werdum Cormier Bigfoot Barnett Mir Browne
LHW Jones Machida Evans Hendo Davis Goose Teixeira Shogun Mousasi Bader
MW ASilva Rockhold Belfort Weidman Jacare Okami Kennedy Consta Belcher Boetsch
WW GSP Hendricks Condit MacDonald Diaz Maia Fitch Kampmann Ellenberger Pyle
LW Bendo Alvarez Maynard Melendez Thomson J.Miller Diaz Pettis Chandler Grant dos Anjos
FW Aldo Mendes Curran Lamas Frankie Zombie
BW Cruz Barao Fernandes Faber Moraes