Going back to Napoli's career stats with a runner at third, less than 2 outs:
It's 252 plate appearances.
52 hits-10 HR, 19 2B, 23 1B
27 sac flies
35 walks
50 strikeouts
Napoli strikes out fewer times in those situations than he does in general. He has a better ratio of walks to strikeouts in those situations than he does in general.
What I would ask is, where is the evidence that in those situations Napoli isn't using a situational approach, and where's the evidence that he's only swinging for the fences?