That exact phrase is also in the first paragraph, the page heading, and in the url. The conclusion that it's the page title that has caused it to rank so well doesn't seem accurate. If anything I'd say that it's a combination of the exact phrase being in all 4 places.
Not to mention visualwebsiteoptimizer.com has a pagerank of 4.
"My guess is that Google is factoring in high page rank of the blog and then if title matches it ranks the post highly"