Disney was an amazing studio up until shortly after Fantasia came out, tanked, and Walt slipped into his bitter old man "well I guess America doesn't want art" phase.
Walt Disney revived American animation in the 1920s. After initial experiments by artists like Windsor McKay, film animation had slid into increadibly cheap cut-and-paste spinoffs of popular newspaper cartoons. (Rent the DVD of animated Krazy Kat to see some of the crap we're talking about). Animation was seen as a low-priority means of appeasing children. It wasn't until talking cinema that a second motive for budgeting for cartoons appeared: selling records.
Most studios were associated with record companies, and those old, weird bendy-armed sing-a-long animations from the 20s and 30s (Ub Iwerk's being the best and weirdest of that genre -- f.y.i. he did most of the cartoons that appear as clips on Pee Wee) were pretty much music videos; the 78s of animation music were big hits. It was in that climate that Disney started reviving the full painted-cell artform of animation.
Here's Skeleton Dance on Youtube:
http://www.youtube.com/watch?v=mb_WYxgh-_gWhich has links to other Silly Symphonies (the early musical Disney shorts) - definitely check out The Old Mill too, he invented a bunch of stuff to do the multi-layer backgrounds for that, it's amazing looking.
Then he put out Snow White, which you should really really rent and watch on a good TV. It's a painting.
Aaaaanyway, I loved that in the late 80s, kids' TV showed all of this old crap all of the time. As a little kid I really liked black and white stuff better than new things, and now in my old rickety 20s, I geek out about it.
So yeah, historically, Disney tears H-B a new one. (And since Onstad has already shown a taste for old blues and an affection for Vaudeville, I imagine he's thinking somewhat along these lines). But yeah, for humorous content and sharp writing, Warner Brothers is the king, and they and Fleischer Studios probably outrank Disney for sheer 20th-century-animation-awesomeness.
</nerd>