Better weight balance/distribution on any 911 Porka???? I don't think so dude, they are all rear end heavy, even the turbo awd is very light at the front.
Here are a few facts about the Porkas GT2 kerb weight 1440 kg !!! This where it has it on the new R and the other one is power, GT2 has 390kw and 580nm of torque .
Even the heavy weight 911 turbo only weighs 1585 kg with 353 kw and 620 nm of torque and when you push the button she will pump out 680 nm for a few seconds .
As for the GT3's not a lot of power here ( around 305 kw and 405 nm, more torque than any n/a production engine per lt, even more than F430) but only weigh 1375 kg !!! The new R is at least 300 kg heavier, thats a lot of beef to cart around so the new R must be very well balanced car to be able to mix it up with any of these Porkas.
In my view the R is a direct competitor to the 911 turbo and according to reports it holds its own on the Porka, I must say one thing, the turbo Porka feels like she has no turbo lag at all and she has heaps of power from about 1800 rpm up, all the way to the the red line, hopefully the R feel s the same.