Edler? He might shoot the puck harder than Rathbone, but since he shoots while he basically standing still at the blueline, and most of the time his shot just rattles off somebody's shin-pads anyway, it's really a moot point.
Re-watching those Rathbone clips, the kid is shooting while moving at top speed and often leading the rush. And he has a bullet of a shot with the wrister or the slapper, and will shoot from anywhere. And because he can change the shooting angle much like Hughes, his shot selection is far more dangerous.
So yes, I'd still say he shoots the puck better than any current Canuck d-man, including the aforementioned Hughes.