I'm not a NIN, so I don't question them. They may have apoc on for some fights, but then again, they may just have RR/SS/GH for Crit+ and don't need RR because our WHMs don't fail like most other linkshells do.
The few times that our NINs died was from 3k+ damage moves, like Glavoid's Discord that wasn't stunned in time (or my head butt didn't hit at all) or such moves like that.
But then again, I use Apoc not for the auto reraise, but for the Triple Attack +.