Doesn't make sense at ALL!

Novels from the Harry Potter series by author J. K. Rowling have been included in six of the ten spots on USA Today's list of the Top Ten Books of the 2000s. Miss Rowling's novels placed along side the popular Twilight series by Stephanie Meyer and the Dan Brown novel The Da Vinci Code on this list. The paper notes:

Human readers made it a big decade for novels about wizards, vampires and a Harvard symbologist. Two series for kids with "crossover" appeal to grown-ups —J.K. Rowling's Harry Potter and Stephenie Meyer's Twilight— swept nine of the top 10 spots on USA TODAY's best-selling books of the decade. Dan Brown's The Da Vinci Code is No. 2.

Rowling was a best seller before 2000, when third book Harry Potter and the Goblet of Fire [sic] sold a record 3 million copies its first weekend.

By 2007's release of the finale, Harry Potter and the Deathly Hollows, speculation about Harry's death (unfounded) rose to levels not seen since Charles Dickens' 19th-century serials. A record 8.3 million copies sold in a day.

The full top ten list by USA Today is as follows:

1. Twilight, Stephenie Meyer
2. The Da Vinci Code, Dan Brown
3. Harry Potter and the Order of the Phoenix, J.K. Rowling, art by Mary GrandPre
4. New Moon, Stephenie Meyer
5. Harry Potter and the Sorcerer's Stone, J.K. Rowling, art by Mary GrandPre
6. Harry Potter and the Half- Blood Prince, J.K. Rowling, art by Mary GrandPre
7. Harry Potter and the Deathly Hallows, J.K. Rowling, art by Mary GrandPre
8. Harry Potter and the Goblet of Fire, J.K. Rowling, art by Mary GrandPre
9. Eclipse, Stephenie Meyer
10. Harry Potter and the Chamber of Secrets, J.K. Rowling, art by Mary GrandPre

First of all, congrats to Jo got 6 out of 10 spots!
However, I don't understand why on earth is Meyer’s Twilight above Jo and Harry Potter? All the other lists had Jo at the top with statistics…Why is Twilight at the top when HP has sold so many times more?! It said right in the article DH got over 8.5 million in the first 24 hours, and that hasn't happened in ages… bloody hell, so then why isn't it at the top???

I suspect Boggarts are behind it. RIDDIKULUS!!!

Doesn't make sense at ALL!