I agree with Sting2 and beLIEve.
Last week, both Hits and FOX were predicting sales of 750,000 copies or LESS based on early reports. In fact, after 1/3 of the stores had reported, it looked like sales might only reach 600,000 copies.
Instead, as we all know, U2 came on strong on the second day and was able to fly past the 800,000 mark.
Granted, this isn't the 1M mark some thought would occur based on opening day sales. However, U2's opening day is like a highly anticipated movie - everyone rushes out to buy the CD (or see the movie) on the first day. Additionally, the holiday week threw everything off. Many stores were closed on Thanksgiving, essentially causing U2 to lose an entire day of sales thanks to Thanksgiving.
Add in that extra day of sales, and maybe U2 would have hit 900,000+ copies sold.
Going back to the topic, tomorrow I expect to see the big numbers come in. Two weeks ago I feared Jay-Z would threaten the top spot, yet some here told me that it's just a "remix" album and nothing to fear. Clearly, this isn't true. Jay-Z was one reason why U2 didn't hit #1 back in 2000. So now, we'll have to see if this remix can really boot U2 from the top. I have faith though that places like Best Buy will really swing in U2's favor. I've gone to two Best Buy's lately, one just today. The store had no HTDAAB copies out! I asked about it and they said they sold out and had to order more. They had just got in a big shipment and hadn't had time to start restocking the shelves. The other store was the same way - I saw only a handful of HTDAAB copies out! So I'm expecting a big jump in sales once we get the Best Buy data incorporated.
I want to stress again, if the sales numbers prove to be very close, and if Hits declares Jay-Z as #1 for the week, I still won't consider it official until Billboard's numbers are released. The slight difference between SoundScan and Hits could be enough to shift things in U2's favor (or, as the case may be, against them).