orys:
It’s simple. To drive the same bent with the speed of 80km/h, if you drive Jaguar it will be like crusing around the supermarket car park, while if you drive Fiat 125p, you will be at the edge already. That’s why I said that you can’t really compare the two.No, of course. Jaguar XJ, as it goes over the Channel La Manche, bends the laws of physics and becomes easy to drive. It’s only in Britain where it is demanding, as to keep superious British drivers from boredom
Maybe you haven’t noticed, but driving is not only about handling powerful cars in extreme conditions. I would say that it’s one of the highest level of that skill. For begginer, It is about many other things like keeping safe distance, stopping on the pedestrian crossing to let grandmas cross the street, maneuvring in tight parking spaces and many, many other things. All that things are much easier to learn if you drive a car that don’t jump forward with a roarr on engine on the slightest touch of acceleration pedal.
Believe it or not a lighter vehicle will actually be able to enter and turn into any given bend faster than a heavier one can and that advantage actually increases as grip gets less.Added to which is front/rear weight distribution which determines the level of understeer or oversteer on entry to the bend and trust me the big heavy 6 cylinder lumps in the front of an old Triumph or Ford Granada or BMW,or even worse the 12 cylinder one in the Jag,can generate plenty of understeer ‘if’ the entry speed is too high and that issue can only get worse on slippery surfaces.It’s only going through and on the exit of the bend under acceleration where the heavier vehicle gets it’s advantage back mostly because of the better traction provided by the extra weight.
As for the beginner how long does/should it take to learn the basics of knowing when to stop such as at pedestrian crossings and manouvreing in tight spaces in which case it’s all about anticipation using the brakes and throttle control etc anyway and the power of the engine makes no difference in that case ( bearing in mind that even something like an M5 etc is designed not to ‘jump forward with a roar of the engine’ if it’s driven properly.It’s just a question of how long do you want drivers to wait to learn to drive any type of vehicle ‘properly’.Your idea just dumbs down that learning process for new drivers.
However regardless of all that hopefully you might have learn’t something from those clues,concerning the issue of the connection between weight and the ability of a vehicle to change direction when turning into a bend,and slowing/stopping distances increasing massively in slippery conditions on the approach to hazards,such as those where someone might be likely cross your path a long way ahead. 
