Normal Luk Versus Lukless; When do they surpass?

I think that I might actually not have that big of a disadvantage over lukless mages. I capped my luk at 103, so a 22 luk HT pendant, a 15 luk z-helm, and a some extra luk on my other equips lets me use the lvl 163 staff. I have 99 more luk than a lukless, but since the lvl 163 has about 45 more MA than the 130 staff, it makes the difference 54. And assuming that I have 1000 MA and a lukless has 1055 MA, I would do about 6k less dmg with my ultimate if we were both using ice weapons. And considering how my equips are much cheaper since no one uses them, I'd say that's pretty good.