dont get me entirely wrong - i'm not literally disagreeing with you - but the way we (mortals) decide on relevancy is not quite the same as how a search engine goes about it.
By the mere mention of a phrase you establish a 'relationship' to that phrase - at least this is how an engine could/would see it.
And, combined with the things that we know the search engines have a particular liking for eg title,link text,TRUST etc is what provides an engine with its form of relevancy.
This kind of result/ranking shouldn't come as too much of a surprise - overall results are better than they were, no doubt are and still will be improved upon.
However it does beg another question - as to, if this phrase is as vigorously pursued as you stated, whether the other sites are doing their jobs quite as well
