I think it may have change and evolved from the original art as the art is refined and tested in real fight to the death in the ring...kindda like gladiators...over the centuries. [...] I wonder if they have something like this in the west, too, and how would they comapred to others.
We have. That's why our martial arts include guns, tanks, planes and smart bombs now. From what I hear, other cultures have adopted this idea, it seems to be quite popular with the military these days.

You see, the western European fighters always updated their arts. We had about a thousand years of professional warriors ruling the lands and there was competition all the time.
My friend is absolutely convinced that the Chinese stuff is superior to anyother martial art especially European and Thai.
So, he knows all the European and Thai arts? Knowledgeable man, your friend. Maybe he can help me our with some of the more difficult to read treatises. Even though it's my mother language and I have access to originals (no bad photocopies or messed up transcriptions, yay!), there are some passages that are really hard to read.