According to what I’ve read, technically BrawnGP and ToyotaF1 are not breaking any rules. However, they are using a loophole in the regulations to stretch the diffuser rules as far as possible.
I think it’s an FiA issue not Brawn GP or Toyota, if they are within the rules and the FiA has looked at the cars and deemed them within the technical regulations why is Red Bull launching a complaint. Why don’t they (Red Bull) follow the same design approach as BrawnGP and ToyotaF1?!
Honestly, sometimes F1 teams are worse than elementary school students.