I have often thought it was more of a visual quailty. But when I saw Emperors New Groove, I was like, whoa! It contained all the beautiful backdrops and well drawn out characters, but as far as non visual went, the humor seemed more WBish. A lot of slapstick. I did enjoy the movie, I will say that much. But I wouldnt blame anyone for mistaking it to be a nondisney production.
Also, recent animated series don't contain "Disney Quality." These are more of the visual aspects I was mentioning earlier. A great example is Lilo & Stitch. Since it was mentioned, it DOES contain the non visual "disney quailty" that emperors groove does not. But this may be due to the fact that the characters had two movies. As far as the series goes, note how when on character is talking that particular character is animated. The supporting characters currently not speaking are still, and motionless. All they do is blink. This is cheap, and therefore not disney quailty. Course, you also dont want a show in production for 4 years before airing it, so they MUST make shortcuts. "Disney quailty" has everyone alive! Good examples are the antelope stampeed in Lion King and the Festival of Fools in Hunback. Every caharacter moves, may it be 100, or a thousand. They all move, they are all alive. They are not a backdrop, they are characters.
Another possible "Disney Quailty" item may be the story. The evil villian who is evil beyond belief, the heros that are good in everyway. A character must die, or be in a fake-death state. heros get to mourn, and no matter where in the story this takes place, the hero triumps over evil. (snow white, sleeping beauty, Jungle Book, even 101 dalmations had it) But Lilo & Stitch? Ignoring the series and sequel movie, whos the bad guy? Gantu isnt. Is Jumba and Plickly? Nope. Is Cobra Bubbles? Nope. The High Council Woman? Nope. Stitch? Nope. Myrtle? ..maybe. Theres no evil villian. The heros have flaws. A character never dies (he gets hit by a truck, but doesnt die) Is this Disney?