But how would you define "success"? For example, let's say that Ouya delivers the consoles to those who funded the project, but after a year or two, it dies out from lack of developer interest. Would you define that as a "success" because it delivered, or would you call it a "failure" because it died out?

For Kickstarter projects, I think it's better we use more precise terms, like "successfully funded", rather than the vague "successful".