No, Nicki is in her 20s so therefore we are fairly comparing them by showing a video of Mariah when she was in her 20s. Its unfair to compare a woman in her 40s who has been using her voice non stop for 2 decades to a relatively new artist in her 20s. I shudder to think of how Nicki will sound in her 40s if thats how she sounds now...
But hey, since you're so desperate for this, here's Mariah slaying Nicki's existence this year with Hero -
She lip synched tha damn talk, you espect people to take this seriously?