Difference is significant, and it's in dismemberment threshold. In wushu.tbm it's 100, in wushufixed.tbm it's 150. So it's easier to dismember in wushu.tbm
It's worth noting that wushufixed has settings of original wushu, as it was intended by MahaTmA. I don't know what evil person made wushu.tbm, but i hope he falls on his face and gets superherpes.