I think I am fairly qualified to answer this question. If were considering these guys at their best were looking at Wand 2005 vs Shogun 2010.
The answer would be Shogun by TKO. Shogun was a more dynamic fighter who can fight well in an aggressive brawl, but also fight a more composed technical fight. He played well on the counter or leading. Furthermore, Shogun was actually a fighter who was willing to take the fight the ground and engage in grappling. When he did was ultimately successful. Shogun also had the better chin IMO.
Shogun either catches Wand on the counter or he catches him in an exchange and when rocked finishes against the cage with a flurry.