Wide Awake.

WHYB will do better in Europe because it's a mindless, trashy, careless dance song and Katy isn't that BIG there to smash with a ballad.

WA will win everywhere else, sans Asia where both are non-factors.

WHYB has already run its course if it was going to smash it would have already happened

Your fave's main attraction is that her songs are mindless, don't judge if you stan for that.

And of course WHYB will do better, as usual, Rihanna always ends up a step forward from Katy .

Where was WHYB before the music video?

Where Have You Been

How is WHYB any different than most Katy perry songs, no shade.
Let's be real here

smash harder? hard to say, i mean when people see WA, they automatically think "oh, it's Katy Perry. her songs are cute" and then there's WHYB which has that awesome party jam factor.

of course, i'm going to say WHYB, for obvious reasons, i love it, but right now Wide Awake is smashing harder. i give WHYB a few more weeks, maybe a month. it's a late bloomer but it'll be owning the Hot 100

Smashing is not only restricted to NA so i pick WHYB