Ariana had more singles and did way more promo. Meghan is also closing in on her WW sales too.
The general consensus on here is Ariana is bigger Miley, Demi, Selena but why couldn't she outsell Meghan?
Because Meghan is actually a better artist than Ariana even though Ariana has a bigger voice, plus Meghan seems genuine and likable whereas Ariana looks fake with that I am cute attitude, it's really off putting.