Will Katy Perry ROAR to #1 on the Billboard Hot 100? (credit to cuitrex )

Maybe in the future, but I don't see it getting #1 after its first full week of sales.

I don't know what to expect for her first week sales though so..

Not sure. Blurred Lines' lead is massive.
Don't know if even Applause will debut at #1

i think it might debut #2 or #3

I want it to debut at # 1, but that's only going to happen if Blurred Lines starts to suddenly stall. I do think she will eventually hit # 1 with Roar.

It will pull a CG (debut high, but climb to #1 over time).

Roar will debut at #1

No

It's hard to predict these things without hearing the material.

It will debut high and then reach #1 once Blurred Lines dies down.

Not gonna be able to debut at #1 (**** Blurred Lines), but it will reach #1 eventually

She has no chance with "Applause". Sorry.

Like how E.T. had no chance with Born This Way?

This is exactly what I was gonna say

Or what about when Last Friday Night had no chance against Edge of Glory and You and I, or like The One That Got Away had no chance against Marry The Night

Of course, because:

1. It's Katy Perry.
2. It's the lead single and sounds like a smash.
3. Capitol is behind this, they're not leaving a #1 get away.

Yes. I don't think it will debut #1 but it will definitely reach #1 at some point.