All females who released albums in the same year with older careers than J.Lo and managed to surpass her in album sales in the same time frame. 3 million in 2005 is nothing to brag about.
She sells a good amount of WW albums as well. 15m from GGGB and Loud alone.
Its a good and bad thing. But having a plethora of memorable WW hits is always good for artists. Because in 20 years ppl can always associate her with her big hits. Its easier to remember songs than albums.