GooneriC -- I do think this is a fair concern.
Two seasons ago he was far too passive in attacking the central areas (on top and in the box). He improved on that last season, and his goal count flourished. This year, looks like he's back to his safe zone in the right channel, where he rarely scores from.
I do think part of that is down to his lack of strength and athleticism. He clearly needs to be in his peak shape to cover more ground, and when he's injured he immediately drops.