Why are people planning on getting Allagen weapons? No one has legitimately killed it yet, and it's most likely impossible with current gear levels/tuning.

And, technically, crafted gear with optimal materia > AF2/Allagan armor. Unless you have both Speed and Crit on your ilvl 90, you shouldn't prioritize it. Relic+1s, on the other hand, are the only things that are unequivocally best in slot, and low WD will bottle-neck everything else you do.