I think when people think of Jovi's 'bad' era, its the mid-late 90s rather than the whole 80s. Even non Jovi fans know of Bed Of Roses, and some even Keep The Faith and In These Arms. Then there is Always which was a bigger hit than Roses. Plus KTF was the first album after the massive New Jersey Tour which im sure helped with the popularity of the album.

These Days had no huge hit. TAALS didnt do bad on the charts but the other released songs had no major impact on the charts (in the US). Plus it was the last album for 5 years and the first after Alecs departure. Then youve got the whole grunge thing booming at the time of its release (VOMIT!). I think these are the reasons why it had no huge impact.

Only Jovi fans know how awesome it really is.