[iman]

Here's another great letter of similar style by the creator of ren and stimpy:

http://www.lettersofnote.com/2010/01/your-pal-john-k.html

(I like how the pixar guy said that it's all about having a good story, while the ren & stimpy guy says that good drawing is more important than the story)

[Psyonic]

I realize this isn't proof of anything, but Pixar is a hell of a lot more successful than Ren & Stimpy. Perhaps that means something.

[aohtsab]

I don't think either's success can be compared accurately — one is a behemoth of a company and the other operates on a much, much smaller scale.

Besides, Ren & Stimpy did garner a sizeable cult following (not including myself) — and quantifying interest in a cult classic isn't as simple as tracking purchases.

Perhaps a better comparison would be Pixar vs. Nickelodeon.