Disappointment: Archer Critical Build

[Karleguarth]

Gear associated:

Critical Build

Yew Longbow - double melded with +68 Crit Attack Power
Body - single meld with +36 Crit Attack Power
(Total: 104 Crit Attack Power)

Tested with both DEX and PIE focusing gears (double melded gears and rings)
No noticeable difference on critical damage output.
(but of course normal damage is a bit higher with PIE focused)

Ifrit

Simply using an Ifrit's Bow and PIE gears.

Result

In a Moogle fight, I dealt 30k more damage with Ifrit's bow,
doing the exact same things in the match...

And I can't resist to conclude there's something really wrong with how the game is dealing with those critical materia.. or am I doing something wrong?