This strengthens the argument. It addresses potential weaknesses—that the similarities may not outweigh the differences—by suggesting that a key difference may have been changed to a similarity, as the two bands now share a musical arranger.

This does not affect the argument. The argument is based on the similarities between Moral Vacuum and The Cruel Herd—the argument is not about whether the latter band’s music is objectively good, but whether Jackie, due to her inclination to similar music, will enjoy it.

This does not affect the argument. There is no reason to believe that Jackie will enjoy The Cruel Herd’s music more because, like Moral Vacuum, it performs at a club her peers attend. Jackie may never even have been to this club.

This does not affect the argument. Jackie can only listen to rock music and still not like The Cruel Herd—liking rock music does not mean she likes all rock music. Maybe she only likes and listens to Moral Vacuum’s music and no other rock artists!

This weakens the argument. It weakens the premise that draws similarities between some of the two bands’ lyrics, noting that they are both witty. If Jackie prefers the songs that are not witty, she may not be inclined to enjoy The Cruel Herd’s lyrics.