It's somewhat a success, but somewhat a fail. It's almost too much going on at once with them both trying to sing at the same time. I think they could've done better with the song, but it wasn't bad ... the original is better.
I thought the remix was just going to be the original with some vocals replaced by Katy. The original is way better, I'm sorry to say. I love Katy, but I just can't get into the remix. Damn any radio station who prefers to play this over the original.