^^ I would love to find something that would allow me to see any and all 301's to a url ... I wouldn't call it priceless, but it would be close
On the topic of keyword density, I am experiencing a similar issue right now. A competitor's page has included a laundry list of FAQ's that is nothing more than keyword stuffing for every conceivable combination of the keyword and related terms.
We have an almost identical keyword density in the body. However ...
They have almost 20X the number of keywords in the body as we do, and nearly as many keywords as we have TOTAL words.
While there may be a few other (and not necessarily less important) factors that are leading them to outrank us at the moment, this has to be a up there towards the top of the list.