I don't know. It's quite a tough one.
I think Maria has a better chance of success, and she seems to be able to perform a variety of songs.
However, Brenda has a personality, which I don't see from Maria. But, I can't see Brenda going anywhere after this show.
So, I really don't know. At a push, I would probably say Brenda.
But, I think the judges would favour Maria over Brenda.