If you were local in the Los Angeles area I'd be happy to show you the Titan we have. Can't help with the Sony but I'm sure you can find it somewhere to see. I use a 6K lumen 1080P high brightness 3D unit which runs 2000:1 contrast, which may be comparable to the wuxga unit you are looking at. If the lens is replaced with a high contrast lens, they claim a 5000:1 contrast I believe. That cuts your lumens down to 3000 though and hurts your 3D.
The reference models give you the best of both worlds with high brightness and contrast, but they run 20-30k more, big bucks.
IMHO much less than 6k lumens just doesn't cut it for active 3D. I've been living with that for a couple years now and can't imagine having less lumens than that. Thats a bare minimum, 10-12k would be even better.
Their 4K unit is coming and we already have a PO in for one to replace the Titan, at which point we will be moving the Titan for a smokin deal, but that's still not until Q4 at the earliest.