Radioshack for sure. With the roster they have they should have done a lot better.
Sky did have several riders that didn't reach their level from previous years. EBH had injury problems during the most intresting period. Gerrans wasn't himself, Wiggins was too focused on the Tour and disappointed there. I had also expected some riders to grow more or come into their own but that didn't happen for riders like Froome, Augustine, Carlström.
Still they also had riders that were postive surprises like Downing, Sutton, Thomas, Possoni, Nordhaug and Cummings.
Then there were a bunch of riders that performed well as expected like Henderson, Flecha, Barry, Swift (though he races relatively few races) and Hayman.
Their season was also cut short by the death of their soigneur in the Vuelta and several riders decided to end their season there and then because of it.