That quote stood out at me too, not because it incriminates a media company, but because it incriminates WikiLeaks.
Why is WikiLeaks concealing whatever evidence they have of this? It's awfully convenient for them to make this claim. If true, it demonstrates the importance of the WikiLeaks organization.
But at this point it's just PR. Why should we believe this guy?
And besides, WikiLeaks is supposedly sitting on a stockpile of submitted information. They themselves choose when and how to release information, so who are they to criticize?