I do not understand why you would give a Ninja a really good growth rate in a particular offense stat, and then have their mystery/abilities only use the other offense stat, there is literally no good reason I can think of for doing that short of sloppy game design.

EDIT: Hinata seems to either have a change or a re-wording to her Strong Will skill. But as far as I can tell it doesn't necessarily work the way the description implies because that would be broken as all hell. Regardless of however it works, it's a confusing description and in battle she seems to behave pretty much the same as always.

EDIT2: I would like to point out that since 3.0 I've been having a lot more cases of the "Control" stat coming into play in battle and have found my team to be resisting chaos/acupuncture/immobile etc. more frequently when it would almost never, ever happen in the past, I don't know how you go about testing that stuff but it does seem like (from my experience) that they've increased the effectiveness of that stat in general which would be nice.