You 100% do not need any lp to have an effective wing scorer (at guard... not as true at sf), but this guy would need it because his scoring attributes aren't great. He should be able to score fine against backups... maybe part of it is a tougher schedule and/or just bad randomization over a small sample size. But the bottom line is, if you were counting on this guy to be an effective scorer, you were always going to be disappointed. The fact that your team passing is very low doesn't help this guy.