Well according to all involved both men, but especially WJM had plenty of fighting experience. I think BL's interest in combatitive sports probably was an extension of his interest in the martial arts in general. He wanted to make the ultimate "style".
It's just too many things for me point to BL getting beat. His reaction was extreme to a fight he "won" no matter how long it took him to win it. He claims up until that time that he fought many rooftop battles in hong kong but it has been disclosed that for the most part he just watched the majority of those rooftop fights. My guess is he probably fought in a few and won atleast the majority of them, or hadn't lost at all, and so expected to be unbeatable. Then the unthinkable happens, he gets beat. Couldn't him, he is the best fighter he knows. Has to be the system or the way of training.
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I'd tell you to go to hell, but I work there and don't want to see you everyday.