All 4WDs are not the same and they are usually on SUVs which have a high C of G - Try an RS6 in the wet, nothing theoretical about that, If you have added traction you are not going to go off line when pulling away from the lights at full chat, like many performance cars do - A well sorted, well balanced low C of G vehicle with well proportioned 4WD has the thumbs up - the only downside is when you get out of shape, you are going much much faster because of the improved handling capabilities.
How many times have you snaked off from the lights on a power take off (in the dry), with the rear of the car changing the car's direction and you having to constantly correct it waiting for the speed of the car to catch up with the speed of the rear wheels - it does not happen in an RS6 even in the wet, it is traction and it is that traction that is there for you, to save you when you are on a bend and in normal circumstances would have exceeded your slip angle.