After some rough maths, using my own perk setup (Resulting in 100 hits per minute, on average) I concluded that 1% Crit = 7.616
So take the igoc off your Shades. MOTR is better.
And the DB sleeves/Chest. Dchest/CM is apparently better now.
Oh, this applies to people using dual Xans like me, and I'm gonna guess that it's not all too different on Mediblade.