In reply to S****** Blonde.

It´s not similar to Mariah´s case. Mariah had a bad campaign but also bad promo (or non existant towards the album release). And #beautiful is too far now, it was a year ago. Mariah would have sold way more copies (at least over 100,000) if the album had been released a year ago with #beautiful: moderate hit + American Idol. American Idol is a distant memory now in Mariah´s case too. While JLo was there this year.
It´s truly impacting that even with all this Mariah can still sell more copies than JLo. Despite debuting years before too.
That said, the industry is dead and everybody sells less and less every go round. Only people who are very young and promoted to death and suppoerted by radio and media can sell decently (Gaga, Katy, Rihanna, Lana, etc) and then only 5 albums per year sell really well (for example Beyonce, Eminem, Drake and a few more right now). That´s it.
ps: I purchased Arcade Fire last album this year (I know it is from 2013) and I´m getting my life constantly. Never thought I would like them this much.