My opinion is based solely on the fact that it was gaga's 3rd album and it should had done alot better because of that. Again my opinion and you don't have to like it or agree.

I will name the most successful eras in order:

RED: A huge album, with 2 smash hits, and a really high-grossing tour
4: A big album, with very good streaming stats
ARTPOP: A good-sized album, with 2 hits and a good-sized tour
Shakira: A decent/small sized album, with 1 hit and no tour yet, but has impressive streaming
Britney Jean: A decent/small sized album, with 1 moderate hit and a huge Vegas residency
Lotus: A flop album, with 1 moderate hit
Mariah: A flop album, with slightly less sales than Lotus, with a moderate hit
Jennifer: A flop album, with almost half the sales of Mariah, with no hits of any kind, no tour and bad streaming

The worst part, is that J.Lo´s album is very good for me, but she definitely takes this

Jlo.