Quote Originally Posted by wereotter View Post
Because a 600 potency OGCD would be too much. Same thing going on with Saber Dance on dancer.
SMN: Aka Morn and Revelation 650 potency, both oGCD's
DRG: Stardiver 600 Potency, oGCD
SAM: Hissatsu: Gurren and Sensei, 850 and 1,100 potency respectively, both oGCD's (but share a recast timer)
GNB: Blasting Zone 800 potency oGCD.

Not to leave out the already mentioned Automaton Queen and Living Shadow.

The potency of the skills have nothing to do with it.