Personality - Rihanna, obviously.
Musicality - Douche
Dancing - Douche
Performing - Douche
Songwriting - As far as I know Ri doesn't write most of her song so I don't know what to judge from (Ri stans correct me on that if I am wrong). I have no choice but to pick Douche for this one.
Vocals - Rihanna. He sounds like a baby still, to me.
Albums - Rihanna
Singles - Rihanna. For a minute "Forever" was my jam, though.
Videos - Rihanna