Hahahaha, oh you :P.

But yeah, you need a massive spread of Data to measure RNG like Crit.

Also, the JP guys have done work and found that the base rate for level 60 is 5% CRT: http://ku-so.hatenadiary.jp/entry/2015/06/20/105345

Maybe if Sunny or I think it's Mibhas to knows Japaneseish can somewhat translate? I'll post this in the SimFF thread as well for Pandabearcat to see.