Umm....you asked two great questions.
As for question 1, the answer depends on the underlying nature of the secrets, and I doubt the pair were witting to everything going on at the "annex". So I don't know, but a better answer is that the SEAL pair also did not know, they only knew that two US lives nearby were in danger, and they made that call suddenly, as things were happening --that's how life works, a lot of the time.. I don't know the secrets we lost at the captured annex and I think we'll never know. But that was a great question.
As for question 2, the answer would depend on whether or not the act of saving the Ambassador's life would come at the cost of losing the annex with the secrets there--I presume you imply that the rescue would involve that loss. And my answer is, "maybe".
Not good answers, but your questions were great.
You should remember this conversation in case some airliners get shot down in the near future. I'm not saying I know that some will but I'm SURE that the chances of that happening just went up, since a big part of the mission at the annex had been to protect against that.
While I was already worried about that I'm more worried now and the biggest worriers will be Hillary and Hussein, now. Or they SHOULD be, I guess I should say...mostly it seems they worry about their own hides, though...
It seems very likely that the chance of airliners getting shot down went up because the administration vacillated and refused to authorize a forceful response, thereby affirming the Islamicists belief that the U.S. is a decaying power, a paper tiger that will not retaliate. We certainly do not know that the annex was attacked because the ambassador was protected. There seems to be considerable confusion about this.
The CIA is now saying that they never told anyone not to aid the Ambassador or anyone in need:
http://www.weeklystandard.com/blogs/petraeus-throws-obama-under-bus_657896.html