bigger rear drums

Just a thought, so reply at will (not trying to be an *ss). On cars, especially performance cars with the disc/drum set-up is it not detrimental to put those huge, heavy drums on the back? More weight to get and keep rolling, then more rotating mass to slow down? Front brakes do 70-80% of the braking and under hard braking the rear lifts-so they would lock up faster and easier theoretically :wack: . The few times I've had to do "Oh,sh*t" stops on the Dart's 10" drums, it always wanted to swing to the right. I was told to leave the 10" drums on, put the 11 3/4" rotors up front, and dial in the proportioning for best results. Like I said, not trying to be rude, just want people's thoughts and experiences.