I would also say that I feel contrary to the Rulesmasters on this one.
The definition of AP is that it is equal to one's STR bonus. One's STR bonus is actually changed when weild ing a 2HW, is is effectively changed, and then only for the purposes of damage by the RAW. I can see wher ethe wiggle room is, but, as others have said already, 2HW are good enough already without making AP even better.