STR +?, DEX +? , DET +? etc.
ROG NIN PGL MNK
Str wont do anything for Ninja, and for Monk Dex is just parry which isn't really anything as a DPS, besides Nin would have more DEX than MNK, meaning higher parry on both classes.

Just gonna have both STR/DEX on the gear. Unless he was kidding like some people are saying, but I'm not gonna comment on that.