I think you are missing clfsean's point about apples and oranges. You say arts aren't equal. He is basically saying the same but for a different reason. You basically say an art can be inferior (1 does not equal 2, because 1< 2) Clfsean, I believe is saying arts are not inferior because they are not meant for the same thing (1 does not equal "A" because "A" is not a number) I agree with this second approach.
'they are not meant for the same thing'
This is exactly why I feel one may be superior than another. One style may be opted for just use of the hands or just use of the right knee etc. . The other style is opted for use of 'everything' let's say MMA rules. the 'styles' created for the more flexible rule system will be superior than the styles created for the more strict rule system. The one with the more flexible rule system will be a better approximation to actual combat. And then, let's take it one step further. Let's say that 'flexible rule system' got ever more flexible. Let's say, inside the cage they put random items to possibly be used as weapons. Whatever, a towel, a book, etc. It sounds silly but I think new styles would be born that would prepare someone for even more circumstances. Which seems reasonable to believe. Not make sense?