A study of the difference between Yahoo and Google-yahoo

Someone asked the difference between Yahoo and Google.
　
1, Google focused on semantic analysis and links, Yahoo focus on title and H1,h2,h3.
　
2, Google updates much faster than Yahoo.
As long as the page itself to optimize, you can get a good position in Yahoo, and these page optimization is their own control, so that Yahoo optimization is easier than Google optimization, the use of shorter time, especially for hot keywords, the difference between the two more obvious. From another point of view, the people who can optimize Google are not necessarily the level of high, may just have more resources available to use the link, if the service is over, the link to your point of withdrawal, your ranking will fall. And if you can optimize the Yahoo, that your Web page optimization itself is good, your ranking base is solid, your service provider for you to do some down-to-earth work.
I want to highlight Google's powerful semantic analytics capabilities. Today, I searched for "SEO primer" in Google, and the result is a Web page on "SEO Basics" in the first place. This web page is optimized for "SEO basics". I looked at the source file for this page, and there was no "getting Started". This site is a new station, not many external links, home PR for 0, why this page will be ranked in a lot of "SEO primer" of the Web page? And the first page has seven pages are for "SEO basis", and highlighted with red body characters, it shows that Google "Getting Started" and "base" as a very close word. And then in the Yahoo search "seo primer", found in the top three pages did not target the "SEO basis", All for "SEO primer."