50/50 is simply locking both diffs and driving.. Couldn't be more simple or any more uninteresting..Cs is working out spur ratios and working out degrees of drive and oversteer etc. They are two entirely different things and one is much more complicated than the other. The Cs is much more technical and more of a challenge and much much more fun. If you learn a driving technique for 50/50 you'll have to start all over again for going to Cs, it's not like you progress from one to the other