Also, Gaga has done no televized international promo besides the UK. Katy, just an example, performed on all of the big shows in France (Le Grand Journal), Germany (Wetten Dass), Australia (X Factor) & the UK (X Factor). Just saying.
Britney Spears - Femme Fatal (432.000)
Katy Perry - PRISM (453.000)
Rihanna - Unapologetic (492.000)
Beyoncé - 4 (511.000)
Taylor Swift - Red (1.459.000)
Gaga's #s seem pretty average compared to other modern day albums by female pop stars. Good for her. It's not the 3.000.000 I'm sure many we're expecting, but it'll do!
Britney Spears - Femme Fatal (432.000) Lady Gaga - BTW (1.920.000)
Katy Perry - PRISM (453.000)
Rihanna - Unapologetic (492.000)
Beyoncé - 4 (511.000)
Taylor Swift - Red (1.459.000)