I don't know why (us) Lana Del Rey stans are getting offended like Lana isn't alternative...
R&B/Hip-Hop is much bigger and influential than alternative pop music so that gives Nicki a head start by default. Not to mention those small things, she's been working with ****ing Kanye, Jay Z, Eminem, Rihanna, Lil Wayne, Drake etc. She had Nas in her video!
But this is a pop forum so inb4 who is [insert urban artist]...
Yes, BTD has outsold Nicki's discography (because it's an amazing album nonetheless and slays careers) but let's not forget Nicki has performed at the Superbowl, been invited to the VMAs and the Grammys.
Like Nicki or hate her, she is relevant and has a tremendous amount of impact. She bought female rap back into the game. Who else?
Nicki of course wins. Shout out to both girls though, I ****ing love them