This thread goes completely around the described issue into off topic area.
The phenomenon, I described has nothing to do with certain cars (apart from drive layout), nothing to do with power (and certainly not with power oversteering or your moms 1969 tuned Camaro getting wheelspin in 3rd gear on the supermarket parking lot), nor is it connected to input devices or users abillities.
The issue, I described is about the cars behavior, after loosing traction on the powered rear axle due to a) traction differential between tarmac and touched curb or even grass b) partly traction loss due to stiff setup, riding a bump.
The traction loss goes into the car swerving it's rear end (absolutely brilliantly implemented btw).
But now comes the issue:
The car usually does not behave as expected, when countermeasures are applied, which would under normal conditions 1) slow the car down 2) ease the swerving and finally getting full control of the backend, as both rear tires catch traction again.
The issue in fact is, that as soon, as the car is put into the swerving status, it will continue to do so, even when slowing down considerably (way under 100 km/h).
It does swerve it's backend excessively independent on actual speed or counter steering, which is confusing (it happened at speeds way under 100km/h and as well at high speed to the same extend).
I drive usually without TC, ABS 1, all other aids off as well, so driving aids should not be the cause of the described issue. I did not investigate the issue deeply in trying to get all different cars out of control, but on the few occasions, it happened, it was a quite surprising (and annoying) behavior, that came unexpected.
For the record, I am not a 14 year old kid, contemplating about advanced racing simulators physics engines ;-)
so please leave comments regarding this out of the thread and think about the described issue.