Very interesting. Probably it means that link popularity has a good role here.
In my post I only wanted to focus on the fact that you can have keywords in your body without penalization: in your example the first listing has the keyword "legal" in the body.
I think that the Algo depends on so many factors varying on how much competion there is for the targeted keywords; for not too much competitive keywords maybe DMOZ listing, title and small links popularity could be fine. In high competitive keywords link popularity is much more important: not only the numbers of the links but the quality of the links too.
I did a search on google for the same page, links = 137. Searched "legal" on google and #6 has 527 links(I am using google as a link reference point).
We cannot at this point factor in links as a major reason for being listed #6 on Fast for the search term "legal". The SERP(thanks Brett)returns 17,344,044 pages and many of then under #6 have more links. Legal, does not appear in the domain name, page name, title or anywhere on the page.
Interesting isn't it.
I know of pages like this that are at #1 for other SERPS.