Not true at all. Players like him find it easier on the right side as it makes better use of their left foot and their tendency to go inside. He did that, but there wasn't an option to slide a through ball when he did that so just ended up passing it to the player behind. This happened many times.
I was more disappointed in Mata. Januzaj had a couple of good crosses, carried the ball forward at times, and had a good pass to Rafael that created a good goal scoring opportunity. Not an electrifying game by any means as he didn't try to take on players as much, and had to wait for the ball on the right wing a lot of the times. Mata on the other hand didn't affect the match at all and I've been wanting him to give great competition for Rooney. There is no way he is considered over Rooney behind the two strikers now.
Anyways, he's a player that is slow to get rid of the ball. He's always been like that unless an opportunity/space arises where a quick 1 touch pass is available. It's very noticeable in this LVG side as players get rid of it far quicker than a lot of other sides. He needs to work on that.
He also needs to work on his positioning as a winger so he doesn't find himself going lengths at a time waiting for the ball to come to him. He used to ask for it at every opportunity as a youth player, but the more he played under Moyes, the less he asked for the ball.