Are you seriously trying to undermine adele success what album this decade has sold 3 million in the UK besides 21? did artpop sell 3 million in The UK since it's not a impressive feat
Those other females all have over 25+ years of albums. Celine only just scrapes over the 10 million mark & thats with over 20 albums including compilations and concert albums.
Madonna, Whitney & Kylie all have over a dozen albums plus numerous compilation albums that are included in their sales. Each have had massive selling greatest hits albums that make up a large part of their sales.
Adele did it with just 3 studio albums in 7 years.
ps; Dido is probably Adeles biggest British competition. She had 2 monster selling albums in the UK that sold around 3 million each. Pity she couldnt sustain that power. She must be around 7-8 million total by now. I dont know what all of Kate bushes albums add up to. Her old sales figures are hard to track. I know The whole story sold like 1.5 million.