I have a theory why they had to make a point of the extra strong witches. It was so that Dean could later in the kitchen say he can't believe we got our asses kicked by a couple of girls, and then Sam says, we get our asses kicked by girls all the time.

So, a sad episode of Supernatural Mirrors Life. I was in Stillwater Oklahoma the day before the episode aired for the way too soon funeral of a friend who was also a Supernatural fan and a colleague. So even though I don't really believe in watching from heaven or whatever, it was a nice inadvertent tribute to David.