We don't interpret stats the same way though James.
Take Pokemon and WA5 defense as an example. Pokemon is a division system so % of average makes sense. WA5 defense is subtractive so % of average makes no sense at all. Pokemon defense is also vastly more potent than WA5 defense.
Turn based standard deviations are typically used because they make more sense than straight up % based stuff. The idea is to make the speed 'spread' equal between TB games, because for example a cast with 50,40,35 speed is functionally equal to a cast with 20,10,5 speed. But by %'s the 5 speed in that second one would be a whole lot slower than the 35 in the first example, which makes little to no sense.
Zophar (Lunar:EBC) vs Yuri Volte Hyuga (SHs): Boom
Heavy:
Zero (MMXCM) vs Asellus (Saga): Not sure here.
Middle:
Flay Gunnar (MK) vs Nash Rumack (Lunar:SSSC): Aroma Material works for me.