Simply put, he can play facing the basket and has a decent jumper 16 to18 ft out
That's how he spreads
He is 4/18 from 3 pt land for his whole 4 year nba career. He does not spread the floor at all.
Spreading the floor is not when a guy hit an occasional mid range jumper. A player spreads the floor when the opposing team expect that the guy will shoot a 3 pt when given the opportunity and make at a reasonable rate.
It's about general perception, not a made jump shot every 3 or 4 games.
Kelly Olynyk spreads the floor because teams know that he can shoot from distance and is a real threat on the perimeter, if he faked less and shot more it would be better for him, but I think I made my point.
WCS will not spread the floor for you if he is on your team. You can bet money on it
Randle shoots more than him, but does not spread the floor also. Watch some vídeos of him. He plays bully ball all the time. His game relies on post ups and driving and throwing his body on the defender for tough layups.
I would rather have Dedmon and Thaddeus Young than those 2