That one flop video is not going to change the fact that Dark Horse's video is the most viewed female music video of the year and Roar is one of the most viewed of all time Even the This Is How We Do video is VEVO Certified.
This, Birthday's low view count says nothing about Katy's popularity/success. It was just a very bad video. The user was clearly trolling.
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G.U.Y. reached 80M with like 50k sales. Pretty good for such a gigantic flop IMO.