... tours are based on star power, which are already based on not just that era, but all previous eras.
The Teenage Dream era was just as much of a WW success as Born This Way, even more so.
Besides, the BTW era didn't start 'til February 2011, the Teenage Dream era started in May 2010. Katy held the top spot from May until February, and was consistently a force even with Gaga releasing, she didn't just drop off the face of the Earth, or end her era. She continued thriving. In fact, the Born This Way era ended before the Teenage Dream era did, and the TD era began almost a year BEFORE it. Just think about that.
You are talking bout singles. We all know Katy did better in that area.
But the fact that even with a re-release of such a big album she didnt manage to outsell BTW
Let the Kats drag the Monsters. That's what they did when Gaga was on top. Now is time for Gaga and her fans to be dragged. I love Katy and Gaga and I've always been supporting to both.
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