It's not surprising that the GW video is doing so well. It was performed countless times, the Pepsi commercial and the live performance was a viral video on YouTube.
The GP is familiar with the song and if the audio was available for sale, it would've hit the top10 on iTunes.
I'm not crazy about the 1st part of the video (the throwback thing with Kelly)
I wish the first part was the background video from the tour.
I think that was the initial idea