Can't really pick. Gustaf is very good but has never beat anyone like SHogun, even a crumbling Shogun. He could come up and destroy him. But if the Shogun vs. Forrest 2 or Machida 2 comes out he is better than Gustaf right now.
I think Shogun still has Pride. Wins this on heart and aggression that Gustaf won't handle.
Shogun Rd 2 KO.