actually screw that

did a test with BAR off

Win-Win Lady Fist with Hyperion Grip, non-elemental

PiP+no fire

non-crit: 89249

crit: 1285K

PiP+Fire

non-crit: 124K

crit: 1285K

no PiP

non-crit: 71399

crit: 1285K

so crit damage still remains the same

which does go along with what Wingsday have tested

but it seems that with BAR(I have 12.5% crit damage for BAR)

the result is affected