Isn't that your problem right there? The best quality food isn't gonna be at quick service. I've seen it done exceptionally well, usually at DCA and a few places in Disneyland (land of wonderful buffeterias and bread bowls), but I don't tend to expect it. And I would never judge World Showcase's food based just on QS. It's been rare that I've been disappointed with a table service meal at Epcot.
The table service at Epcot is the same (and is what I was talking about in the post RSoxNo1 quoted).
Look at the menu at San Angel Inn, and compare the dishes, prices, and ingredients to a real Mexican restaurant in any of the larger cities in the U.S. It's amazing. And same goes for most of the World Showcase restaurants.
It's great if you like it - I've had meals I've liked there. But in terms of authenticity, ingredients, etc., it's all severely American-ized food using mostly Sysco-common food products like every chain restaurant in America.
I'm not being elitist - I just ate some fast food for a late dinner myself. I'm no foodie, LOL. But, those that are kinda laugh at World Showcase because of the quality of food/choices/etc. compared to truly authentic restaurants in the same genre.
World Showcase really is a big shopping mall. I know some people think it's some amazing ethereal experience - and for them, that's great. But it is what it is - a bunch of stores and food courts with minor distractions designed to keep you there as long as possible spending as much as possible. And while it's very, very, very pretty - it's not terribly deep or authentic. It never really was, but it definitely has gone further away from it than it once was. Go to Japan and take a picture of the meal, and then do the same at a Japanese kiosk in any mall in America. Except for the plates it's served on, it really is about the same.