It is, that album wont sell anywhere near 30K, you've bought into your own hype about Leona.

I think you're being a bit simplistic in your thinking. Leona isn't the only one on that list capable of sudden increases in sales. I don't see why its more likely that Dido or Gray. The Beatles are far more likely to add to their sales than she is so they may well leap above her. They come in and out of fashion on a regular basis.

I don't even dislike Leona but I really don't see her being the force she was. She's just not interesting enough. Plus if she comes back trying to be something different it may well backfire.