That's pretty common as a phenomenon: I wouldn't say it's a cliff so much as a very steep grade. My current girlfriend is an inch taller than me, and taller than that in heels (and I love her in them!). But she's the tallest person I've ever dated.
It also shows the shortcomings (no pun intended...) of the 0-10 rating model: there's neither generic Man nor generic Woman. Your rating to women you're more than two or three inches taller than (could be 0, could be 10) is almost entirely independent of your rating to women you're two or three inches shorter than (0).
It also shows the shortcomings (no pun intended...) of the 0-10 rating model: there's neither generic Man nor generic Woman. Your rating to women you're more than two or three inches taller than (could be 0, could be 10) is almost entirely independent of your rating to women you're two or three inches shorter than (0).