What I am saying is it is easier to trip in that scenario. There is a way to use keywords in domain name.
For example, I would say one important reason why wpmu considered to be a site with reasonable authority got trapped was because of their brandname anchors having "wordpress" in it. Google would have assigned it to the actual wordpress site and this being a popular name, it also happens to be a keyword. But i will have to alert you that this is my own judgement and I haven't read anyone stating this as a reason.