I think traffic is only important to people who do not plan to *develop* but possibly plan to *park*
Unless, the buyer wants to develop, but dont want to spend money on the advertising of it, and is willing to pass up a fine .com because of that reason alone, which I can't understand why.
for an example, I bet there are a few people out there who would pass up romance.com if it had 0 traffic. But hopefully, no ones that crazy