It was an alright performance...Katy's never been one for the best vocals every and this would be a hard song to sing live for her...she did great on the chorus, the verses were a little shaky...
I love Katy, and some of her songs are in my heart, for example "Thinking of you". Firework is an amazing song, i can see she was very nervous, but tbh i was expecting more. I've seen better performances by her.
I would like to see them singing this song live, especially Brit & Ke$ha
Keep on hating
You're laughing your ass off, but what's truly funny is you comparing Katy to Mariah. And Britney might not sing live, but when she does/did, she sure as hell didn't sound like Katy sounds 24/7. It's admirable Katy sings live all the time, but she needs help.
Not trying to be rude but I fail to remember a Britney Spears singing live.
Your judgment against Katy is pretty unfair, since I bet you've never seen a raw and stripped performance of hers which actually showcases her voice beautifully. Her performances @ concerts tend to be great! She sometimes lets the nerves get her, so televised performances are not really good examples to base off your judgments.