Britney Spears "Hold It Against Me" and Avril Lavigne "What The Hell"

Last week in America in sale two long-awaited singles - Britney Spears "Hold It Against Me" and Avril Lavigne "What The Hell" have arrived.
Britney's song has got on the first place in iTunes in 8 hours after release (has headed still the first places in 16 countries of the world a bit later)!!! And here Avril who much more strongly Spears needed loud returning (popularity of this woman recently experienced some difficulties), has risen only on 2. At present Britney still holds the top position while Avril has already crashed down on 8.