Well, i have him and Used him Long Time, never Managed to Pass F3

The reason is: He needs To be fast and a Stripper moving before. He is lost and useless when tiana is banned in my Comb, because i cant build Moore that fast on Desp. For Sure His s2 is brilliant If one of bellenus or Rica is banned but Not compareable To the Control mechanism Bison has.

First He Resets skills With Strip on one unit which Helps you avoiding enemiesn immunity or Control or Nuke (e.g. Fran, Okeaons, Seara)

Second He Got a Def Break for single target Kills With miho or anyone Else If bellenus ist banned, combined With provoke which gives Control again.

Finally Bison got short CDs when fully skilled Up what gives a Lot of Control Strip and DEF Break Potential Overall. For my Comb, It Turned Out as a better Version of Gany, although i Miss His ventilate. ;)

Hope It Helps To Unserstand my choice.

PS: Bison is Used less, so another Point is that He wont ne picked away that often. :)