That's one of the best explanations of the differences between dynamics and condensers I've heard in a while.
Good job.
I'll ad that I noticed that, during the presidential debates, they've been using what appears to be handheld condensers -- AT, I believe.
The problem with that, to me, is that it's a bit too revealing on Bush's voice. It sounds even squeaker, weaslier, and more annoying. It's way too revealing.

That guy needs to invest in a good ribbon mic.