I think its comes down to much how time they put into their tracks. I think DJ Amok said in a thread that he gets the main loop/idea done in about 15 minutes?? I'm not calling him out or pointing towards him, but just using as an example. A lot of those producers probably knock stuff out relatively fast as well. Sometimes our best tracks are banged out in an hour but if you consistently finish tracks right away they're probably going to be rather lacking.