Taking it technically what you are saying is not logical.
When something is average to the highest degree it means that it's a almost perfect case of being average. Which would be the the middle of all performances. 11th out of 22 is pretty much as exact as its gets when you are talking about the middle, in fact closer is impossible. But this is only talking placings of course.
Of course the argument shouldn't be about pure placings, which you did point out. So placing 11th with riders that are not capable of more as a team performance might be very good, but still very average in placing.
I find it very hard to judge performances in TTTs by anything other than placing though, which is easily plausible considering the placings Liquigas teams manage all the time. As looking at the riders simply doesent seem to explain that at all.