Justin Timberlake performed just hours before his release, and half of his set was old material.

How do you know Gaga's performance had no effect on iTunes charts? Is Gaga your fave? I picture you perched on Kworb waiting for every Applause update. Such a dedicated Little Monster

Katy's album comes out till October 18th

I think Gaga put more passion to her show, I mean...more new tracks, longer show, stronger vocals. These are two critics anyway so who cares? The opinion depends on taste and preference, there's no right or wrong, but I doubt two critics will make Gaga cry.

A week? Her album is still 3 1/2 weeks away. Why didn't "Applause" shoot to the top of iTunes after her performance like "Walking On Air"? Or why is ARTPOP pre-order not even Top 125 on iTunes? Katy isn't the one in the position to be fearful with three songs in the top ten right now, two of which the top two slots. If anything, GaGa is fearful and dying for acceptance after the mess of BTW, hence going the extra mile to get people excited but the results are, well, underwhelming to say the least.

Some of ya'll stay looking for every ounce of reassurance

I've just listened to 'By the Grace of God' and wow how fans like to overreact.

Why on earth would people WANT songs to be premièred live? Song premier's are always better if it's the official Studio HQ version, I'm not here for a dodgy live rendition effecting my initial opinion on a song, which is the most important opinion.

I'm a bigger fan of Lady Gaga than I am of Katy Perry but I feel like Gaga's set was really geared toward her diehard fan base where as Katy's set was a better compilation of what the GP wanted to hear. Although, I think it is unfair to compare the two when their artistry and visions have very little in common.

You can't be serious...

Katy delivered the hits and was more concise. Although I preferred Gaga's set I can see why the public would prefer Katy's. Gaga's seemed more geared towards Little Monsters.