there are allot of factors..
mark is running with a newer aero package, which has proven to not be as good as the older one.. his team mate flat out refused to run with it but mark is doing the right thing trying to develop the car long term..
the team is not as strong as it has been in the past and they are having problems keeping bmw on side.. has to have an effect on everyone at the team..
mark has never flat out dominated in any class of racing.. from karts to F1 he has always been up the front but you wouldnt put him in the same class as senna, prost or ms
my $0.02