Yeah he didn't. Not just his fault, Fergie used him wrong until the end of the season, but acclimatising to a new league and language and players, playing on the left, injuries, and not being brave enough with the ball all contributed. The talent's obviously there though and it's encouraging that he's spoke about improving and not being happy with his first year.
Like Naughty God says, he plays on the left for Japan and does well there. Moyes doesn't use wingers as much as Fergie did as well for wide play, preferring his full backs to do that; Mirallas and Pienaar certainly cut in a lot, so if Shinji plays aside Fabregas/Mata with Zaha on the other side, it'll look like Chelsea I think with a lot of inverted movement.