I tend to agree regarding quality. I don't have any major problems with the APS-C technology. The two things that bother me are small viewfinders and expensive wide-angle lenses, and neither of these are huge problems for me. No-one's really going to be able to tell the difference in prints. There are advantages to smaller sensors too; either you get smaller lenses which are more convenient and usually cheaper, or you use the larger format lenses and make the most out of them... it's win-win.
But again it's perception. Of course the
vast majority of users will not buy the absolute top level high-end dSLRs... not now and not ever. They will stick to cheaper bodies and probably cheap glass as well. But a lot of them will still, for no good reason whatsoever, think that they are doing it better if that equipment says Canon or Nikon. You see this mentality when someone asks what brand to buy into and they are told "You'll look more professional using a Rebel", despite such comments being clearly ridiculous to us. People will say "Canon and Nikon have been in optics for decades", as if the Asahiflex never existed! It's ridiculous... but people will swallow such comments if there's no-one around to correct them (which there often isn't on C&N-dominated forums)... they are told that within a year they'l need to have an "upgrade path" or the ability to rent lenses, and often they'll accept it without thinking.
You can call me cynical, but honestly there are a lot of people of spectacularly weak will around. They see reviews, they see comments on forums, hell they watch
CSI and notice what cameras they use... and so there's this mentality in place which is fairly hard to beat. It's not only on the internet either, I see it all the time in shops. Sometimes it's the sellers themselves, but more often it's the first-time buyers who come in with preconceptions... recently I saw someone come in looking for something "Like a Nikon D40"... he had no clue what it was he wanted, except that he wanted something "like a D40" but cheaper. The salesman had a good second-hand Olymus dSLR and was trying, in perfectly rational terms, to explain the quality of the Olympus system and their lenses... but the customer had this confident not-having-any-of-it look as if the salesman were trying to sell him a plate of dog turd. "Zuiko" meant nothing to him, he was already convinced he needed Nikon because they were "better". It's like people buying iPods because they're iPods... alternatives may be better and better value, but it doesn't matter... everyone else has an iPod, X-million people can't be wrong etc...
I think I'm just turning into a grumpy (not so-) old man. When I was younger, everyone wanted a certain brand of trainers because everyone else had them, but when it came to buying cameras they just went to the shop and chose one that
they liked. Seems to me that cameras are the new trainers...