Before I go any further, know that I have only taken JKD for about a week. However, I have been reading through the forums for a couple weeks. I have read a lot, and here is my post in a nutshell:
Why is Kung-Fu better than JKD?
From what I can tell, JKD is superior in it’s application to the real world. The teacher makes a big difference, of course, and mine teaches stand up, weapons, and grappling, which covers all bases.
I am told in Kung-Fu teachers are obsessed with perfect form etc., and all kinds of nitpicky things like that, that don’t make a big deal in a “real fight”.
I am also here to tell you that your chi or whatever is bullsh*t. Meditation and the like can only serve to give you indirect advantages, like confidence and the like, in my opinion.
On my first day, I was essentially taught how to box. I was taught jab, hook, cross, uppercut, and basic blocks. My second day was kicks, none high. I think they were front kick, side kick, commited/roundhouse/whatever, and non-commited (similar). My third class was doing drills to reinforce those basics.
JKD is all useful, and any superflous or low percentage technique is not taught. This excludes high kicks, which are done for fitness, not to be applied to the real world.
Of course, these are mostly speculations, and I am not closed-minded, so please tell me what you think, and don’t be offended by what I say.