I don't think Firework is going to be number 1. It's the only Katy Perry single that I don't like, and I think a lot of people will hold that view. The song is a love/hate type song, a lot of people are going to love it but I think an equal amount of people will dislike it. It's not as strong as the previous two singles from TD, it's currently gaining rapidly on radio because of the hype around Katy that has been building over the summer, but I think she'll slow down faster than people are expecting. Firework will be a top 5 hit at best, but that's just my opinion.