In a proper room a projector will surpass any LCD TV in almost all respects. DLP 3D is the only tech that is 100% ghost free with properly functioning glass. You didn't say if the TV you looked at was passive or active. Now I did say proper room in that it has 100% light control and dark walls, ceiling and floors with a good fixed frame screen. Size alone will make the biggest difference in 3D, black level may be a little worse but generally all else will be better then the TV. If the proper room is not an option then there is a lot to consider between a TV and projector. Passive LCD from the right distance does show well in a showroom environment, active can have problems in show rooms as room lighting will not be ideal.
"Smart enough to know better, to old to care" ------ Dedicated Home Theater, Mitsubishi HC7900DW Projector, 110" 16:9 Jamestown screen with variable power masking for CIW 2.50:1 to 16:9, Marantz 7009 with 7.1.4 Atmos with Ohm mains,3 DIY Subs (2 15" (1 ported, 1 sealed and a 12" 4th order bandpass), 1 DIY butt kicker, Custom Built HTPC, 10TB DroboFS NAS