I have a 50" 2011 Panasonic with 3D plasma screen, connected to a 3D capable Denon receiver, with a blueray player and a fat PS3 hooked up.
I'm using 7 quid HDMI cables from Neet between the receiver, TV, BD player, and I use the ARC feature on a daily basis, and occasionally 3D bluerays.
Go figure?