Quote Originally Posted by NoctisUmbra View Post
Actually, it was determined that the crit bonuses from Internal Release, Straight Shot and Wrath are flat % additions.

Basically, Internal Release on MNK increases your crit chance by 30% (if you have a 15% chance to crit based on your crit rate value, you will have a 45% chance to crit under the effects of Internal Release on MNK).

Source: http://valk.dancing-mad.com/ (scroll down a bit on the home page)

Therefore, no. Any gains from Internal Release, or crit rate increasing buffs from skills, are entirely independent from the Crit Rate stat.
Hmm, I'll take your word for that, but you still cannot trade DET on a 1:1 basis for crit rating.

(Asking a Japanese speaking player in my guild the tooltip does in fact say critical hit power, not rating.)