See, the thing is, when P!nk did it, she knew what she was doing; she had extensive training in all sort of acrobatics for her Funhouse Tour. P!nk was confident, and rightfully so. Her vocals during the Grammy's were
beautiful and spot on.
Katy, on the other hand, looks scared and stiff during the performance, because she has no ****ing idea what she's doing. I think that shows pretty clearly in the vocals...especially in the chorus.
My gosh, the chorus...
But I don't think it really matters
how Katy did, because the fact of the matter is, this is a complete and utter rip off of P!nk's performance. Either way, it's rather pathetic.