I'm not sure anything has changed this season yet, he had a tough time beating his man on Saturday - the assist for Rooney was one of the exceptions, and a great sign of a player not scared to keep trying when it isn't going for him - you have to give the lad chance to get back up to match sharpness. Everyone else has had a full pre season, he hasn't
Ronaldo is more of a Kanchelskis dribbler than say a Messi. He relies mostly on speed of acceleration to beat his man. What marks him out as one of the best at what he does is his rapid ability to change direction when running at pace, but also his foot speed. He can usually touch and move the ball a couple of times before the defender can react once. The thing that makes him arguably (right now the best player on form is Messi, there's no denying that) the best player in the world is that on top of this, he's phenomenal in front of goal. He misses an awful lot of chances, but he takes so many shots that he's still bagging consistantly