Ovechkin is easily the most explosive offensive hockey player I've seen (and that doesn't include Gretzky, because I started with hockey once he was past his prime).
That story also compared Toews to Crosby, which was an interesting pick. I think Crosby has Toews beat on offense, but Toews is probably better on his own end of the ice.
But of the three mentioned, there is not a better leader than Toews.