"Oh my goodness me, you are such a delight. I've never met anyone as wonderful and joyous as you, and I must tell you immediately how wondrous and joyous I find you, but in a way that seems super casual and doesn't make me look like a loser for feeling all that wonder and joy."
How it actually comes across:
"I think I can make you feel good by putting all other girls down."
Everyone wants to be special, so "You're not like the other ______ !" seems like an inoffensive template, unless you stop and think about it for a couple of minutes. There's no way to phrase this that doesn't come off as "Before now, I've put all women under the same sweeping generalization of dull, dumb, 'too girly,' or 'not chill,' or whatever the opposite is of the compliment I'm trying to pay you."
Again, it's an accidental confession wrapped in a compliment, admitting an inability to recognize that other women can like crude jokes, sports, Star Wars, or whatever "for cool guys only" stereotype you've bought into. Accepting this compliment means also accepting that all other women are doing it wrong. It's pitting women against women and attempting to make us feel good about it. Just tell us about the wonder and joy, dammit.