G_ZHANG and Sherwin used Xiom Omega 7 Asia /52.5 deg/ on the FH and O7 Europe /42.5 deg/ on the BH.
Its a really great difference and one should have it in mind reading the conclusions.
I personally do think that this blade is designed for modern harder rubbers like Omega 7 Asia, Tour and Hyper, maybe Pro, but not softer.
Using Europe would make this blade work as a typical All/All+, not very effective even on mid distance.
So I think its meant for aggressive OFF players with greater energy and amplitude, who need more safety and control with the harder rubbers.