I think the features are salient - HDMI, DTS-HD, Audyssey XT32 Dynamic EQ, 4K Video, etc.
Personally, if it had at least Audyssey XT DEQ, I could live with the HDMI v1.1 and regular DTS & DD since I don't care for 4K, 3D, and I can live w/o DTS-HD, DTS-X, TrueHD and ATMOS.