We are in a different climate. The chances of Bey getting another 2 million seller is next to none. But none of Janet albums have outsold DIL or IASF in Europe, which are bother at 2.7-2.8 million in Europe. As a matter of fact, she has not even had a number one single or million seller in UK, which is the biggest European market for music. Bey has 2 albums to pass 1 million, 5 #1 singles, and 3 #1 albums in UK.
Her latest "Lemonade" only sold 650,000 in Europe which is a 400k decline from previous album, but look at the climate, and look at her tour. Sold out completely in countries she did not even sell Gold. Beyonce is like Tina Turner in Europe (of course minus Germany), meaning that she has great record sells, but her legacy is more about the stage in Europe than everything else.
Beyonce is simply bigger there. Doesn't mean Janet was not big. Janet came from the biggest album selling era ever, and she only sold around 11 million albums. Whitney outdid that with The Bodyguard alone. Even Whitney's most R&B album in the 90s MLIYL sold well over 4 million in Europe.
Only Alicia Key's debut sold more in Europe when it comes to non-European R&B albums in the 00s. Janet did very well in Europe, and if anyone knows me, they know I will tell the world that Janet is an international icon, but I truly do not believe she was at the same level as Beyonce in Europe.