I am not sure WMB sees the pitch on the outer third like you would want him to. One thing I notice is not only does he swing at pitches that start on the outer third and finish off the black, he is trying to pull them still as if he thinks they are in some other location. You never see him try to take the ball the other way even when the location begs for it, like a pitch that finishes on the outer third instead of starts on the outer third.
As suggested in the post above, you almost never see him simply try to get wood on a ball that is in a bad location with two strikes just fouling it off in an effort to get a look at something better.