Exacerbated by the poor video quality of YouTube, Vimeo is amateur videos with a higher median quality in terms of production value, simply because they host a better resolution applet.
I notice, though, that a good deal of Vimeo ads are for BustedTees, which is also owned by Connected Ventures. Is it doing that great a job of making money standalone? I thought it earned most of its money by selling premium accounts.