It's pretty abvious that group B cars don't stand a chance with WRC on a stage. They may have much more power but it's been many years of development in terms of chasis dynamics, transmission. The gearbox alone makes WRC car much quicker then Group A car of the same power.
Active diffs make them even more stupidly fast.
Still Group B cars are monsters

)) Wonder if one could put some modern stuff on RS200 or something... if I win some uilion dollars one day I will think about doing something like that