I just saw the mediabase chart and the ONLY competition Britney has in the Top 40 are Black Eyed Peas and JLo (Rihanna and Katy will have peaked when Britney enters the Top 5).
No one's gaining big updates besides them and Adele (and she's #30 currently).
I highly doubt it. But we can hope. She's plummeting in the UK charts as we speak. But the Japan release could help also. Ah, I wish she can pull it off.