Because they have made a car worse than last years car (so far) and its confusing the hell of out them. Yes the had softs on at the end, but they were also running the car lower to the ground and porposing returned as Sky Italia and Anthony Davidson both mentioned. So they had to lift the car for fp2 onwards and lost downforce as a result. The car is a dog.
Mike Elliot who was responsible for last year and this years car has been moved on internally.
Only hope is James Allison still has his midas touch and can help mercedes get back onto the right path. Fingers crossed that the new sidepods, front wing, front suspension and floor get them closer to RB, as ferrari are doing sweet feck all at the moment (and confusing the hell out of me).
Unfortuntely for us all (apart from diehard max fans), we have the longest season ever in a F1 calender and the most boring. We dont even have a RB version of Nico Rosberg to challenge Max. Ferrari and Merc hace to try to close the gap (which is almost impossible under a cost cap).
We might have to wait for next season now for someone to truly challenge RedBull.