I don't think PA is a good measure of "defense" just because the tempo of your offense affects how much the other team scores in total as well...I myself am at 620 at this point in the season, but I'm sure if I played slower (low post or motion), that number'd be much lower...
Pace has an impact, of course. That has worked quite well. So my games are usually my playing NORMAL versus the other fellow's RnG. That is the same pace as you playing RnG and the other guy NORMAL, is it not? It is not like I play a slowdown offense, because that does not work for me.
However I built my team on the premise I'd be facing morons who play RnG and FCP with starter team talent. I am a bit surprised my strategy and tactics have worked as well this season, including a major Cup upset in my last game.
So I'll stick with my tactics for a while, knowing I'll have to continue to adapt.