Definitely swift.
She effortlessly fills stadiums
scored 3 1M debuts
attained more accolades
more consistent album & catalog seller
attained more chart feats
more acclaim... *really can't even exhaust all*

Britney

I see why you're upset but it is the truth unfortunately

Accidentally voted for Taylor
Both slayed tho

Ya I think I trust Billboard & Apple Music more than some random member on a music forum but thanks I guess

Britney

Taylor. Britney felt bigger because of her peak, but Taylor is bigger overall.

Definitely the two biggest females in the US of our generation. Queens

Britney for now. But Taylor is catching up

Taylor Swift

Total album sales in the US:
Britney 33.1 million (Billboard recently posted that number. Britney's receipts thread here is hella inflated)
Taylor 28.6 million

Even the field where Britney should be clearly winning Taylor is right there and she obviously destroys Britney in every other aspect.
Taylor has been far more successful than Britney in the US.

The numbers in the thread are correct. Billboard doesn't count Club Sales.They are included in the sales thread tho.

Taylor has had far more commercial success in the US than Britney

She's like one album away from outselling her, even tho sales were like 3x as high during Britney's peak

EDIT: Just compare 1989's chart run to any Britney album. She's far bigger.