"In my mind it was Berry not Elvis that was the king. "

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No contest.

Chuck did it all.

Presley was a singer.

But Presley was a white singer.

Worth noting that Presley's label, Sun Records, which brought us, besides Elvis, Johnny Cash, Carl Perkins, Roy Orbison, Jerry Lee Lewis, Charlie Rich,was originally a black label run by a white guy, who realized that the great music he was producing with his stable of black artists (Howlin' Wolf, Little Milton among others) would get a lot more audience if it was performed by white musicians.

Sam Phillips figured it out and started signing white artists, and making history.