Since 98% of chick films are "fiction & fantasy," this is precisely how I view them. I can manage to enjoy just about any movie once I've decided I'd like to see it. Movies ARE, after all, entertainment (or ways to pass the time while relaxing)
Of the movies you list, I never got the Twilight Fever nor did I see Bride Wars. The other 3 I did see and thought they were at least, "Fun." I LOVE musicals of any kind, so "Grease" is up there with my favorites.
Someone mentioned "Pretty Women," & sometimes I enjoy a movie because I like the actors in it.....but talk about "FANTASY!!" As though a wealthy, handsome business executive is going to fall in love with and "rescue" a prostitute. Yeah, that'll happen......never. EVEN if she looks like Julia!
I either enjoy a movie or I don't. I rarely try to "rate" them....I leave that to the authentic critics who get paid to do that.