One area in which the old ones will probably be superior is longevity especially when run on dirt roads, no roads etc.
The newer ones are full of electronics and that is part of why they develop so much horsepower in small block engines. They also will run a lot of miles as long as these miles are put on quickly.
This is just a guess but I bet if one lives out in the country as I do, drives on dirt or mud roads and keeps the vehicle a long time, they will not stand up to it. The electronics will eventually fail, the complex braking systems will fail etc.
Only time will tell.
They will run a lot of miles, PERIOD!