DAMN people, you don't have to guess! Just grab some NHB tapes, these questions have been answered time and again. Kung Fu doesn't work. Aikido barely works. Ninjitsu is a fairy tale, so is pressure point fighting, totally worthless in real life unless you scare someone away with your flashy poses. TKD works against unskilled guys only, and you better hope he's not bigger than you.
Judo is ok
boxing is ok
kickboxing is quite good
MT is great
wrestling is great
BJJ rules all
This isn't theory, this shit has been proven.
http://www.gracieacademy.com - get Gracies in Action, you'll be doing yourself a favor.