Interesting discussion this (and it reads better for Van Gaal when you see the actual text - he felt Vlaar would have confidence so good on him for being honest on making that call). However, I would have thought Huntelaar would have been one of the penalty takers - fresh and a penalty expert.
Not the best strategy, in my book, to have your best waiting at #5 (assuming that was the case).
Edit: re discussion on Van Gaal picking Vlaar as #1. Couldn't be arsed including the whole thread.