sinous blades are more cruel ?

[fenlander]

Is it true that a sinous blade causes more damage or makes a wound worse ? It says on wikepedia that the sinous blade such as a keris "danced the wound" making it nore difficult to heal. Therefore these kind of blades were considered cruel by Europeans and that is why they were never popular in Europe but were in Asia.

I think that is doubtful. What do the experts think ?