Problem is he *doesn't* tend to make the most of his chances in finals. This is what I mean when I say he isn't clutch. Even if one were to grant the premise that his low shots-on-goal rate in finals is all the midfield's fault, there's still the issue that when he *does* get chances, he converts at a considerably lower rate than he does during the home and away season.
Non-finals games: 234
Non-finals goals: 521 (2.23 per game)
Non-finals behinds: 274 (1.17 per game)
Finals games: 21
Finals goals: 29 (1.38 per game)
Finals behinds: 23 (1.10 per game)
Those stats are meaningless. You play against better opposition in finals, and finals are generally a tougher, slower contest. Of course his numbers would drop off slightly.