I'm with SH on this one. I don't think Soundhound is comparing Logic 7 to any other matrixed soundfield as much as he's saying that none of them take the place of, or in any way enhance a discrete multichannel mix.

I especially, personally, do not get the idea of a matrixed surround version of a
stereo mix. The very idea is illogical (pun intended).

Once I've heard any discrete multichannel source on any given setup, then any matrixed soundfield is easily and instantly apparent.

Some like it, some do not. Playing re-mix engineer with a remote control makes little sense to me. DD-EX, Neo 6, DPLII, Logic 7, Bass Enhance, etc. Who's implementation is better is a non-issue to me...notwithstanding all argument to the contrary.