I've got a couple of knife scars on my hands (both required stitches) -- what does that prove?
Let me try to be clear: there have been people in WCK that were known as fighters, guys like Wong, Sum, Cheung, etc. I don't think anyone doubts these guys fought. There are even, in Wong's case, newspaper accounts of his challenge fights. There were also lots of people who claimed to fight.
But just because these people fought, and even won, doesn't mean they were all that good -- all it proves is that they were better than the people they fought. And if the people they fought were crap, how good did they need to be?
I think there is a tendency to idolize these guys as "fighting masters" but when we actually see footage from the legendary rooftop fights, we can see for ourselves that even the winning WCK fighter looks like crap. Sure the WCK guys won, but not because they were all that good, just that the other guy was worse. It was bad fighting bad; the less bad won!
Here's Wong "sparring"
http://www.youtube.com/watch?v=HwNUzW1M48w
Want to tell me what is particularly good about it?
So my point is that before we go off and draw conclusions based on stories or legends or whatever, let's see it for ourselves and base our conclusions on firsthand evidence.