Those individuals in the military and intelligence communities who have been leaking to Fox News have likely also been leaking to the big newspapers and networks. While Fox went ahead with its stories the mainstream have sat on what they know so as not to derail Obama’s campaign. This is evidenced by the fact that when reporters from ABC and CBS saw their stories cut from broadcasts they put what they knew on their networks websites.
If the "dozens" of attackers, who we know had AK47s, RPGs and light artillery, had simply intended to kill the ambassador I'm pretty sure the entire unguarded staff at the consulate would be dead and there'd be evidence of gunfire and high explosives.
We do know the terrorists attacked the CIA annex with gunfire and artillery.
What were the attackers' objectives at the consulate?