The 2433 LW has an advertised dynamic contrast ratio of 50.000:1, too. :? That's just numbers anyway. Of course with Samsung you never know what kind of panel you'll get no matter how similar model names may be, but I don't think your 2433 is some secret, one-of-a-kind kickass prototype.
Lol, didn't think I had a secret prototype...more like an early discontinued run. I've heard they will sometimes lower specs if a certain outgoing model competes with an emerging one, etc.
No info on their site about it, which is annoying.