Weidman, he is the most well rounded and because of that he should be able to beat the largest group of styles. Weidman dictates where his fights take place, the others can't do that as well and will lose fights because of it.
"All I guarantee is Violence" Wanderlei Silva
HW Fedor, Mir, Cormier
LHW Wanderlei, Shogun, Alex G.
WW Diaz, Lawler, Kampmann
LW Gomi, Pettis, Alverez, Khabib N.