I don't know much about algebuh but 27 Million x 2 =/= 42 Million.
PIU was always gonna get more views than WB considering it's more controversial, she has 10 times as much subscribers and is of course more relevant, not to mention PIU was put on the main page unlike WB and it still has a banner on YouTube whereas WB doesn't.
Britney's views are fine considering she started out in 1998 and it's her fastest viewed video.
It was meant for another Britney stan.
PS: There is a banner for WB on YouTube. That is how I got to Vevo.