Yeah it is interesting, its like he doesn'y hit an abnormally low # of fly balls, just that most of them go centre or oppo rather than pull, which isn't a great recipe for those fly balls to turn into HRs.
Having not seen his swing it's hard to say if it's an approach thing, or maybe a timing thing...
Where's Cito Gaston when you need him to teach a kid to get that foot down early! PULL DAT BALL