The Samsung 85" was shown in 3D but I don't have a filter to video the Samsung active glasses TV's. Both Sony and LG are about equal in PQ and are passive. I got good video of both the 84" and 65" models. Not too much on the 55" as they don't interest me.
The Sony offered more features and better speakers and a 4k server loaded with native 4K content and an xperia tablet to control it all in their 4k models. LG is lower price but does not offer any content with the TV.
Considering Samsung uses active glasses, not passive, it automatically has a higher 3D vertical resolution than the Sony and LG which are passive FPR 4K TV screens. But this makes no difference, unless you have 3D content in 4K native
which right now is only available for the Sony.
Confused? Simply put, this stuff is just now evolving so we should not worry as to what is offered with the TV's and content availability until they hit the shelves later this year or now for the 84" Sony and LG. Therefore if you must have now and must have 4K native content, the Sony is the only game in town.
If you want active shutter glasses, wait for the Samsung. If Passive is your passion, get the LG or Sony. I also looked at Hisense, Sharp, Toshiba, and Panasonic. Vizio was not at the CES show but had a private press room in the Wynn Hotel. They all showed models but I got the impression these were not in final form so I didn't bother to review them for personal consideration at this time. Of course that story could change in the weeks to come. Best to keep eyes and ears open to breaking news if you are considering being an early adopter. I plan to wait for prices to get reasonable and do not plan to go OLED until certain technical issues are resolved.