ORIGINAL: TomW
In the 911 most of the weight is at the back (gearbox and engine), so the centre of gravity is also near the back.
Only flaw with this is that cars don't rotate around their centre of gravity when they go sideways, they rotate around the centrepoint of a line between front wheels. If they went round the centre of gravity then the front would step in when the back steps out. Of course if the oversteer turns into a spin then it is the CoG that you rotate around, but by the time you're spinning you have lost control.
Maybe I AM Fangio - I thought my non-LSD cab was really benign to go sideways in, too.