The whole gimmick of weapons made from Deviant monsters is that they charge Hunter Arts more quickly. Exactly how much more quickly?
I tested this with the Switch Axe art Energy Charge II.
With a normal weapon, it takes 12 hits in sword mode to fully charge it.
With a Deviant weapon, it only takes 10 hits.
The amount of charge X gained from each hit of a Deviant weapon can thus be calculated:
- 10*X = 12*Y (this is when both weapons reach full charge)
- 10/12 = Y/X
- X/Y = 12/10
- X = 120% Y
The result seems to be that Hunter Arts charge 20% more quickly.