Can anyone play a fighter correctly with an emulator?

I'm talking any fighter.

FPSs are no real problem, but fighters just never work for me through a keyboard.

i've never had a problem

i've played JJBA on my psx emu with no difficulty.

Okay, I just used my DBZ BT3 disc for PCSX2, and the only problem is that it's SLOW.

Well, that's your problem.

your topic confused me i thought your talking about the controls using a keyboard instead of a dpad

if you aren't running it properly
well obviously you can't play it

I've mastered Mugen (I know it's not really a fighting game, But it's still pretty neat.) with my keyboard. I can do nearly any quarter/half circle move. My Mugen videos with Dio & my newest one with Kenshiro is proof of that.