Well, my first guess, without knowing any specifics, is that maybe this one got links from a very reputable site, so it has more page rank.
If this is the one that happened to get written off in a very reputable sort of location, then it could be that this one has more page rank and that’s why it outranks it. It’s strange because if this one has high views and comments and ratings, then it’s getting word of mouth from somewhere, but maybe there was a really good link that came to this site and this one doesn’t have as many links or something like that.
You know, the sort of factors that influence a video universal result are, and often the case is very similar to the sort of factors that influence Web search. So, we look at, you know, how well we think a particular result will match in terms of topicality or the textual sort of matches. And then, we also have to have some idea about the reputation of the page. And things like links can play into that for example.
by Matt Cutts - Google's Head of Search Quality Team