Here's some news that may or may not surprise you. Since Megadeth's released 'Super Collider,' two months ago, album sales have been somewhat disappointing. In fact, 'Super Collider' was outsold this week by Metallica's 'Black Album,' which is 22 years old.

Metallica's self-titled 'Black Album' is not only one of metal's most successful albums, it's the highest-selling record of the last 22 years in the U.S., period. With approximately 16 million copies of the 'Black Album' sold, the full-length classic is the most popular album of the Soundscan era, which began in 1991. As pointed out by Metal Injection, the 'Black Album' routinely sells around 1500 copies each week, and as Megadeth's 'Super Collider' has dropped in sales, the 2013 disc sold less copies than the 'Black Album' did this week.

Megadeth's 'Super Collider' has been panned by both critics and fans, although there are many who stand behind the latest Megadeth release. 'Super Collider' has sold just over 60,000 copies since it dropped early in June -- 1,713 of which were scanned this week. How many copies did the 'Black Album' sell this week? The official count is 1,737. As you can see, Metallica's 22-year-old 'Black Album' charted higher than Megadeth's two-month-old 'Super Collider.'

Megadeth's 2011 full-length, 'TH1RT3EN,' debuted at No. 11 on the Billboard 200 albums chart, selling 42,000 copies its first week. The album has since sold around 120,000 in the U.S. as of December 2012. Although 'Super Collider' debuted at No. 6 on the Billboard 200 chart, only 29,000 copies were scanned its first week.