Because she has been declining after We Found Love and this is her 7th album in 7 years and we were afraid that because of her overxposal she would undeperform so it is surprising that Diamonds is having this success. you can go now
No one thinks she's overexposed besides people who don't like her anyways & some of her stans.
The song is top10 on iTunes and top20 on Streaming, so it's top10 on Hot100 because it deserves it, not because it's a radio hit
But BB, tell your fanbase to sit with the "no promo" talk because Rihanna doesn't need "promo" when radio is her biggest promo tool for the majority of her songs.
38, Madonna
34, the Beatles
28, Michael Jackson
28, Stevie Wonder
27, Mariah Carey
27, Janet Jackson
27, Elton John
25, Elvis Presley (whose career predates the Hot 100's Aug. 4, 1958, launch)
23, Whitney Houston
23, the Rolling Stones 23, Rihanna *new*
22, Paul McCartney
20, Chicago
20, the Supremes