The original figure, on the left, has a strange side turn in the right buttock. The WM figure does not have this streak, but buttocks still look a bit like they are 'glued together'. 

With arms up further up on the shoulder, next to the neck, the original figure shows the rise of the muscle, where the neck/collar area of the WM figure, on the right, looks too low and the neck points out oddly.

Based on what I have seen here, I would say both Antonia 1.2 and the weight mapped versions have their strong points and their flaws. Knees and elbows look better in the JCM version. Buttocks look better with weight mapping. The situation next to the neck is a bit ambiguous. Issue becomes serious fairly extreme arm lifts. Clothing will be behaving there very different from the skin anyway. 

If it is for ease of fitting clothing, I would think a hybrid Antonia would be worth considering. Thigh area is a prime source of trouble, not in the least because it is the area mostly covered by clothing. Also, there is the interference beteen left and tight thigh, and 3 for each connection axises of rotation to deal with. Bending at elbows and knees is more simple. They have only one axis of rotation that matters and part of a simple chain of members.

My bet would be body, shoulders and thighs weight mapped, and keep JCM's for knees and elbows.