The drop rate on a Ifrit weapon is higher than the success rate of triple+ melding a crafted weapon with all tier IV materias - which is what you'd have to do to claim you have a better weapon at this point when it comes to most of the DoW weapons.

The problem isn't the drop rate RNG. The problem is the duplicate loot wasting.
The success rate of triple-melding something should be exceedingly low because it requires no thought. The Ifrit drop rates are retarded. It takes like 350 runs to get a full set of weapons. I, personally, am something like 1/50 (I stopped keeping track after I started punching myself in the dick). The problem IS the low drop rate and the fact that the consolation prize is dark matter instead of a turn-in item that you can collect (for the record I don't think that he should drop crafting materials)