What is the best overall form of martial arts?

I like Wing Chun. It is very effective against street fighting, but isn't usable in MMA due to certain rules(Of course you don't want go breaking people joints and poking people eyes). It is great against multiple opponents(but running away is better). It doesn't look awesome because 95% is about counter attack. All martial art is equally strong. It only depends on how strong is the person and how well can he paired up with the martial art he practiced.