The Monk Temple

[Instrumentality]

I'm not so much "trading" as much as straight up taking gear with determination first and above any gear without it at the same ilv. I'm prioritizing det in my gear, followed by crit. Obviously, the accuracy cap and limited choices mean I have to think of it as an entire gearset, but all of that goes without saying I would think.

...That's how trading stats works? You're sacrificing crit and SS pieces for pieces with DET or taking pieces with DET prioritized over crit/ss.

Like these two sets:
http://ffxiv.ariyala.com/LQ1W (crit stacked)
http://ffxiv.ariyala.com/LQ1X (det stacked)

There's a skill speed difference of one. You 'trade' 130 critical hit rating to gain 92 DET. That's what I mean when I say you're trading stats. If that's a worthwhile trade to you, then by all means, but I don't think you're gaining a marked increase in your damage output for those kinds of trades. In fact if you parsed both of those sets you wouldn't notice a difference literally at all.