"fmx is wack and for bros that cant ride at a real track!!!" that makes alot of sense, considering many of the Top FMX guys grew up racing... Nate Adams, Travis Pastrana, Twitch, Deegan, Metzger, do you want anymore?
Sure the top FMX guys grew up racing, but the only one you mentioned that was any good is Pastrana. I respect those guys because they are doing wehat they do well, but dont kid yourself and think that they could qualify at a national or supercross race. And likewise there are no good MX'ers that would make it out alive at a FMX contest. Motocross rules!!!