No I wasn't undermining Katy's success. Those monster single sales from her has to come from somewhere, that's why I'm puzzled at people saying "She should be selling more for an album with 5 #1s". Her album is selling good based on the massive success of her songs.
With Britney, her strength always came from album sales. Despite most of her signature songs having low peaks at Billboard (Oops/Toxic
), her album receipts were always there to compensate. That's why I was expecting better performance for Femme Fatale singles because her album sales weakened by a lot.
, the only thing she had going for her during that tour was her dancing. But other than that Femme Fatale Tour >>> Circus > Onyx. 
If I was there with my mother... Oh God, I would have ran away. 
The Circus Tour was too good to be true, and I went to dates during the 1st month, I wonder what those who went by the 2nd leg would say. 