In a nutshell..What Pierre imported from S.America/Cuba ,was not truly representative of the indigenous dances.TYhe one dance that was even close, was the old form of Square Rumba, abandoned for the current style .
And, the competive arena, embellished all the dances, to a point where they have strayed from their core values ( Musically, its beyond belief ! ) .
And, there is virtually no separation between social, performance and competition styles .
The American "Social " style, did get it right .