After doing some researching, I think I've come to a conclusion. Or a theory i should say.
The most beneficial build for xenon is as follows:
str - 330
dex - 330
luk - 330 + remaining AP
(base stats) this is because multilateral (+50% total damage i think) is not affected by %stats, only the base.
Another thing i should mention is that, luk gives 1.5x more damage than dex/str.
Assuming all equips have unique pot, you could either get 9%luk or 6%all (per line)
With all that being said, wouldn't %luk be better than %all?
Provide some math to prove your case as well. It would be greatly appreciated.