That means the old age and high PR domain is worth than thousands of the backlinks. Actually the truth is high PR domain name no need do any backlinks and easy to be ranked on the top of the Google.
There is no such things of the sitemaps, links, and whatever things you can image.
Some of the clients bought a domain name from the godaddy. These domain names are expired from the white house. The links also from the US white house. Things is the domain suddenly get higher ranks after the new owner changed the title of the website.
If you want rank website faster, go buy the expired high pr domain. That's the only way you can rank the keywords high in a short time.