User blog comment:Hayashi H/Yasen CA Medium Gun Test/@comment-26154973-20160308062145/@comment-26247760-20160308080127

I think the problem lies in that crits and hits are independant, in the sense that crits can allow a "miss" (CL0) turn into a hit. So it can skew the test in favor of acc. In small sample sized tests, like these, it may skew the results enough that we make wrong conclusions.