Not disputing your stats, and neither of us are disputing he could've been in more goalscoring positions more often.
But one or two decent chances a game you'd expect him to convert some of them. Penalties aside I don't really remember him scoring at all last season. And anecdotally, not supported by stats, there were a number of occasions where his finishing simply wasn't that of a goalscoring striker.
Again, hopefully just confidence and a goal or two may change that.