A case in point is that in a team with Strauss, Cook, Pieterson and Bell, who all have way more natural talent (I'm not sure sure about Trott), Collingwood is currently has the best average in the team for this series. Something that currently looks likely to continue.
Except for Onions, of course, who averages infinity.
(Bell has the most runs, though, which was something like a 200/1 shot with one bookmaker before the start of the tournament)