The important thing is that Salsa is played throughout the Hispanic world and has received influences of many places within it. It is of all of us and it is a sample of our flexibility and evolution. If you think that a single place can take the credit for the existence of Salsa, you are wrong. And if you think that one style of dance is better, imagine that the best dancer of a style, without his partner, goes to dance with whomever he can find, in a club where a different style predominates. He wouldn't look as good as the locals.
None is better, only different.