I think the album is good but I don't know why it's being compared to Mariah's. They are 2 different types of artists with different styles of music. Mariah's music is hip-hop influenced Rnb. Madonna on the other hand is a dance-pop artist whose new album contains a few dance songs with hip-pop beats. They cannot be in the same category.
Now Janet's cd is the one that should be compared to Madonna's since they are both dance-pop artists.