hmm as to what i know the new uniques serve the name right. they become "unique" with skills, so it may be a debuff, a new skill or something else that makes it standout. not saying that the weapon is good or bad. but it was meant to be that way.... different.
now the 42 > 57 uniques serve a more pvp style way.
but dont think they would change the stats but we can always be hopeful
Thanks