These two inner-power sucking techniques are similar in many ways. Both suck up their opponents energies and drain them to point where they lose all their inner-power cultivation.
I believe both also don't require their practisioners to touch their victims. XXDF can be executed through objects. I think BMSG too.
(correct me if I'm wrong).
XXDF was derived from BMSG and another energy sucking technique (anyone want to fill in ?).
The only difference is BMSG intregate all the different energies into one unified form of inner power, while XXDF does not and in the long run, XXDF becomes very harmful to the practisioners because all the different energies will collide to each other (happened to RWX).
But it will be interesting to see... if a XXDF practisioner is fighting against a BMSG practisioner,
Who will get sucked dry first, why ?
PLEASE DO NOT DISCUSS all other techniques, if you are using LHC, DY or RWX as examples please ONLY use their BSMG and XXDF. Other techniques DOES NOT apply for this discussion since we are ONLY discussing these 2 similar techniques.