The two sites are in two different verticals, and since both sites are a client of ours we're at least trying to be somewhat aggressive ;)

You make an interesting point, in that if a website is right at the top of the rankings for a high traffic keyword then the keyword chart might look more skewed toward the broad end... maybe that is true, however I'm assuming that a search engine won't push a website to that point until there is enough trust: enough pages in the index, links and enough long tail queries sort of "supporting" the broad terms.