I don't know what you look at to come up with your opinions? Webb was fantastic last night. He returns the ball really well, making tons more metres from every return than Wellens. He also set up two tries at least through his attacking play.
The one mysterious element to his performance was his refusal to try to catch the bombs. Several times he was in a position to make a catch and chose to let it bounce. It didn't cost him last night, but if I were his coach I'd be advising him to stop that.