Red Bull are in comparison RB5 to RB6 a few seconds quicker.
The RB6 did not look that different but, with a fully integrated DDD, and exhaust driven too, has given them a huge advantage over last years car. plus there suspension appears to love empty or full tanks, handy in a season of no refueling!
The BGP001 compared to the W01 is nowhere near as fast. The difference here is the advantage Brawn had was eroded over the winter and all their improvemnts have been overtaken by other teams.
By the end of last year already, McLaren and Red bull were the equal of Brawn if not, then faster!
The problem I feel is that Mercedes GP is nowhere near Ferrari McLaren and Red Bull in terms of staff or budget.
Next year will be the acid test for Merc and Brawn....Schumacher too come to think of it. I understand the resource restriction is being phased in over the winter of 2010 2011 and Mercedes are operating on that guise at present or slighlty over (440 staff).
Considering that even Renault have more manpower than Mercedes I think there achievments are par.
We should consider talking of the grey area that is this resource restriction. A new thread perhaps?