Considering we've NEVER seen a 205 Cormier, sure. Gustafsson has the cardio to last and the chin (don't give me the Nelson bs, he was knocked out by Arlovski years ago). Gustafsson would use his movement and footwork to make it frustrating as hell for Dan Cormier and box him up. Cormier's boxing skills? Let's be real, at LHW they're nothing and even against Nelson they looked very amateurish. Gustafsson by UD or finish (T/KO). Cormier has like a 10" reach disadvantage against Gustafsson and Cormier is flat-footed as hell. He'd be spent in the first couple rounds and taken out by a 6'5 lunatic in Gustafsson. Head kicks, knees, elbows and punches haven't proven to even drop Gustafsson (even once) and he's fought and eaten flush haymakers from Diabate, Thiago Silva, Shogun and Jon Jones (knees, elbows and kicks).