Charming Fox Battle Skill

Having spent a while experimenting with the battle skill of the fox and trying to determine how the hell the devs calculate the hero that will be disarmed, it seems the angel buffs are not taken into account, why is this when it is a massive factor in the starting attack power of every hero?

This is a battle from Final Stand War (this dev calculation occurs in every event), in the battle log Shadow Kitsune is clearly disarmed, the fox has 7,626,596,810 MATK in party formation, MC has 8,641,300,397. So MC has over 1 billion more PATK in party formation.

In the screen shot 1 you can see PATK is boosted 120% and MATK is boosted 0%, how can the opposing fox disarm my Shadow Kitsune when mathematically she does not have the highest attack.? If you can provide a satisfactory explanation from the developers I would be rather impressed.

Screen shot 1

http://ub95-loa.gtarcade.com/share.php?sid=39005900000800&pkId=11564627e0d5d1cf