Shlemenko is MW that cuts no weight similar to Gastelum. The thing is, Gastelum is built like a washing-machine and is a physical and powerful pressure fighter with great wrestling....Shlemenko is a dynamic striker with a big kicking arsenal who gets exploited by wrestler and pressure types, often who have size advantage. Shlemenko needed to cut weight and be a WW, it's too late now he's like 33 so he's an old dog at this point. Technically speaking Mousasi is on another level, but there's at least a 15-20lb size difference fight night, can't imagine storm has much for Moose.
Still think Shlemenko could come over and beat guys like Uriah Hall and Brad Tavares in the UFC though, he's a solid fighter.