You're missing the more fundamental point here. Not really 2 different animals at all. A vehicle with a rear sure grip can require more talent to perform at it's best than one with an open rear. That applies to cars on pavement as well as to trucks off.

If rustangs didn't have both rear wheels pulling, they probably wouldn't have as much trouble staying on the road when leaving events. Similar to your problem keeping your vehicle on the the road when both rear wheels pull.

Sounds to me like (in my best Jack Nickolson voice) "YOU CAN'T HANDLE THE SURE GRIP!"