I have one site coming up as 43% and it is at the top of the SERPs and one site that is coming up at 94% and it is nowhere to be found on the SERPs. I don't think this tool takes offpage SEO in to account.
As far as I know google.com doesn't have meta tags for description and keyword. The only tag is the title which is "google". Those tool that tells the score of the site is uniform, I mean its been programmed. Google got good PR and good serp because they manipulate the serp and they have huge backlinks.
Domaintools.com is one of the trusted sites for domain tools and stuff. It's just that a search engine (google) don't need to be optimized for search engines.
98% here.......but what is they actually basing this info from? I don't really see the point in the "SEO score".
Totally agree with you Azusa. I don't think that these scores show a clear and exact picture. The best part to see is that my Sites have a much higher SEO Score from that of google. LOL
sure yahoo.com only has 73% I think the score could be the lower your site has the better site traffic your site has.