I think what RJA says is probably essentially right. Basically, Chris and Dom are simply better.
I would imagine longer term ( maybe not even that far ahead ) that Chris and Dom will be aiming to get back to challenger doubles. As has been discussed before, I think that move is more difficult for David and Sean.
-- Edited by indiana on Friday 20th of January 2012 04:33:49 PM
So we will have three different British tournament winners in a row. Andy Murray week one, Josh Goodall week 2 and either David or Dan (or even the other Dan) for week three. Good start to the year.