Top selling albums WW - 2009:
01. Susan Boyle - I Dreamed A Dream - 6,0 million copies
02. Lady GaGa - The Fame (Monster) - 5,9 million copies
03. Black Eyed Peas - The E.N.D. - 4,6 million copies
04. Taylor Swift - Fearless - 4,2 million copies
05. Michael Jackson - Thriller (25th Anniversary Reissue) - 4,0 million copies
06. Michael Jackson - Number Ones - 3,6 million copies
07. U2 - No Line On The Horizon - 3,5 million copies
08. Kings Of Leon - Only By The Night - 3,5 million copies
09. Michael Bublé - Crazy Love - 3,3 million copies
10. Beyoncé - I Am... Sasha Fierce - 3,2 million copies
Rihanna not in top 40
http://www.mediatraffic.de/albums-2009.htm
Best selling albums of 2010
http://www.mediatraffic.de/albums-2010.htm
1. Lady Gaga - TFM
13. Rihanna - Loud
2011
2. Lady Gaga - Born This Way - 5.9M
5. Rihanna - Loud 3.4M
http://www.mediatraffic.de/albums-2011.htm
2012 Gaga didn't release anything,
Rihanna is at 22 and 23 with TTT and Unapologetic with 1.6M each
http://www.mediatraffic.de/albums-2012.htm
and 2013
13.Rihanna - Unapologetic
Island / Def Jam - 1,9 million copies
25. Lady GaGa - Artpop
Interscope - 1,3 million copies
So basically Gaga smashed for a few years and then fell JUST below Rihanna's "impressively consistent level"
If that works for the Navy - good.
2014 - No Gaga / Rihanna
Gaga's worst charting position is 25 and Rihanna's is not even top 40. So basically Gaga had the bigger peak and Rihanna had the bigger dip.
ARTPOP selling 2M in 2013-2014 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Rated R not being found anywhere on the charts in 2009-10 depsite selling 3M (which at the time was not impressive in the slightest)