The problem for Black Beast is that he's at his best when he's getting top position and going Donkey Kong and smashing dudes from that spot. Does he really want to mess with Werdum's guard? it's HW, so yeah BB could land something big standing too, but the Travis Browne that basically couldn't touch Werdum over a full FORTY MINUTES of fighting damn near had BB out in their fight before Browne gassed and got stopped. So basically, yeah, Werdum might have fallen off. Maybe even to a significant degree. And maybe it's due to USADA related reasons. Maybe. But even so, he almost stopped Overeem in rd 3 in his last fight. He's way more skilled than BB. And the fact he has the best HW guard in the history of MMA probably neutralzes BB's best weapon.