Unfortunately they don't. These styles stay at a faily simplistic level because they didn't have the combat exposure.

It can't be obvious especially most schools i've been to disregard key fundamentals. But i agree with your second point - best way to test one's styles.

Firstly, Hung Gar is not much of a style compared to the other two

so basically what you're saying is that your a fukwit with limited knowledge of these styles as a whole(except for the schools you have seen) who feels they every right to put them down with all 2 cents worth of your knowledge.
wow, intelligence from a higher source or what.

how about you explain wing chun to me, seeing as though you know so much about it. tell me everything you know & then we'll see if you have any right to open your mouth.
my bet is you mention centreline, chain punching maybe chi sao & not much more.(come on give me some details)
how about the system you practice, could you please tell me why it must be vastly superior.
vts