You clearly are a little confused.
Yes, you should always break as hard as you can with control so your % is just made up bullshit.
8 ball never has pushouts so you don't know what you are talking about there.
Being you do not know the rules of APA you probably do not play APA so you probably shouldn't talk about it as it makes you look foolish.
Yes I know 8 ball never has pushouts - that was the point I was making, about this thread appearing to describe both 8 and 9 ball at the same time - be careful when you make these kind of judgements about posts because people might think it makes you look foolish - although I'm a little more charitable than that and think you just mis-interpreted my post.
No I don't play APA and I am not aware of all the rules. And no, I shouldn't not talk about it because of that, my opinion is no less valid. The wording of the rule is ridiculous. The 4 balls must hit the rail rule is sufficient to encourage players to break sufficiently hard.