That's the thing with American culture. The fact that numbers or hard evidence is needed, which is odd since Christianity is so popular here. That's way off topic. Anyhow, why do you need numbers to judge something? It's an art form almost. Yes, art is subjective but on some levels can be judged. In drifting you can judge many things including the speed of entry (like auto-x), angle of entry, the lines the driver takes (which is essential to judge in tandem especially if a driver passes another driver on the inside, etc), and then there's the "bling bling" factor... how much smoke is coming from the back tires, etc.

The fact that people are saying it cannot be judged means they haven't looked deep into it. I agree with Charles on some level. Like I said, I think every motorsport takes an adequate level of skill. The thing that is hard to grasp in drifting is the concept. A lot of people are skeptical and confused. You never really know UNTIL you do it. The way it feels to lose traction yet be in ultimate control while the car sets. It's a beautiful thing, really.