"You're not like other girls" - well, you could take it like some posters have done and say "why do you have to be offended by every single little phrase".
Or you could look over your life experience and do a swift calculation as to how many of the men you've heard using that phrase have turned out to be knobs. In my case, I'd say that's a pretty high percentage.
Not all exactly the same kind of knobs. Some of the slightly milder can't-be-bothered-to-engage-with-this-female-on-a-personal-level-so-I'll-just-use-a-template-from-a-movie variety.
Others of the slightly more worrying everything-female-is-inferior-so-the-greatest-compliment-I-can-pay-a-woman-is-to-tell-her-she-is-more-like-me,-a-Man. (Doesnt' necessarily mean they believe you are more like them, they just think it's the nicest thing anyone could say).
Others again of the far more sinister everything-going-wrong-in-life-has-been-the-fault-of-women.
I wouldn't say it's a positive, either way.
The thing to remember is, when we're courting, to use an old-fashioned word, we don't owe it to a man to evaluate him fairly as if we were an employer reading his CV. If we don't like something he says, or if we just don't fancy him or his turn of phrase, we don't owe him anything.
Years into a relationship, with shared memories and mutual obligations, quite possibly children, we do owe it to our partners to be fair to them, to be patient. to not take offence at an unfortunate phrase, to not slam out of the door the moment they get on our nerves.
But in the early stages, we don't owe a new potential love object any more than we owe all the other millions of men in the world! Unlike an employer, we don't have to fill this post unless we happen to want to. And the only reason for wanting to should be that we spontaneously and without effort like what we see. Fairness doesn't come into it.