Here is the iTumes Apple chart from around the world and it's selling. It's either one or two. In the US it's at number 1 and in Australia 1. If Bowie hadn't released his song, it would have been number 1 in all countries, I think.

http://www.apple.com/euro/itunes/cha...rocksongs.html

Another article saying how it's shot to number 1

http://hairbangersradio.ning.com/for...=facebookshare