After doing the tests I drove each car around Midfield reverse in A-Spec. The SS wasn't as far behind the GT as B-Spec would have me believe but the F6 blew the other 3 away. Only problem with doing it myself is I can't replicate the same level of driving for each car, which B-Spec can (or at least better than me).
I'll try the Mazda6 next. 👍 I looked in to doing a lot of the Aussie market cars but not many are comparable to each other in the same way the Holden/Ford(/Pontiac/Chevrolet) group is.
I'm looking at doing a new thread with cars compared to a standard system, but it will depend on time constraints.