Before you judge OP, let's think about this objectively:

For MNK:

Ifrit's Claws to Garuda's Talons = 1.38 DPS upgrade. Which is pretty fair, for a Primal fight which isn't very hard and considering it doesn't take much time to get either weapon if you just farm for the weapon exchange item.

Garuda's Talons to Sphairai = 0.98 DPS upgrade. In order to get this upgrade you need to spend millions of gil getting a double meld, weeks farming Hamlet for seals, you need to speed run <17 mins in both AV/CC 3 times, do a behest, caravan, faction leve, get 999 beastcoins (or 500/99 depending on which you choose), kill Ifrit on Extreme mode, and kill Garuda.

Doesn't seem quite right does it?