The difference is Britney had longevity WW while Gaga is plummeting down the charts and is only staying successful in America due to that commercial. The reason why it flopped on the BB 100 (which was basically irrelevant then singles wise) is because she was banned from radio, and they solely based their chart on radio play. Slave 4 U still remains to be one of Britney's memorable music videos.
oh i give knee that one slave 4 u slays but the receipts show a flop.
Knee is so far gone her handlers are probably telling her it is the #1 song in the country and an international smash hit.
Its always good to make the fragile happy.
commercials are great promo for songs when in heavy rotation
Sexy And I Know It
We Are Young
Ho Hey
Cant Hold Us
Applause (when I went to see Insidious 2 the car commercial was playing...theres like 3 different versions)