Like I understand haters or people not in the know, but her own stans comparing this to "HIAM" and not realizing the major difference in circumstances.

This was always going to be a battle. From the time weeks ago when we thought "Blurred Lines" might still be dominating, to Katy coming out and smashing and then Miley this week. Plus, it's a fairly polarizing song at first listen. It'll be a grower for the GP, and realize they aren't repeating 30 times in a row like us.
Adding on, the top three is selling VERY strong. Meaning Britney even being among the numbers shows she is selling strongly as well.