In reply to opd2.

Mariah did 2 (Two) interviews and never did I heard she said: Minaj or Nicki. She avoids speaking that name.
Minaj on the other hand has done tones on interviews, both radio and TV. Mariah was the main topic in all of them.
After all that talking, Mariah doesn't even have to do any promo: She is the main star of all interviews.