Hi there, thought I'd get a few peoples insight on this and see if I'm right about this or not.

So after messing around with it on Ariyala a bit, I ended up putting together a full crafted set up + materia (and using the Relic Nexus) and a T13 (Using Dreadwyrm Daggers) end game set. The numbers ended up surprising.

So the full crafted ended up with the Stats of:
Dex: 594, Acc: 548, Crit: 512, Det: 394, Skill: 522

The "Endgame" ended up with:
Dex: 654, Acc: 519, Crit: 471, Det: 386, Skill: 393

Now for that wonderful numbers game.....
First thing to keep in mind the Acc for T13, based on what I found it's about 545. So no matter what your gonna need to either use food with the endgame build, or lose out on a good bit of dps.
Also I'm taking into account the Ariyala numbers for determining dps, so Dex = 1, Det = 0.332, Crit/Skill = 0.187