It's always fun to compare NASCAR drivers.
While it's pretty easy to compare drivers that are currently active, it's a bit more difficult to compare drivers of today with drivers of other eras.
Racing today is so much different from racing back in, say, the 1970s. There were more competitors and races back then, the style of racing was different and there certainly were nowhere near the improvements in the sport today like SAFER barriers, head and neck restraints and a state-of-the-art new car that maximizes driver safety.
Because of the disparity between then and now, it's hard to compare drivers head-to-head from then and now. Still, we came up with five drivers of the past who, while they did good back then, might have been less successful in today's racing game.
The comparisons are not meant to disparage the former drivers whatsoever. It's just that they were of a different era and a different time than today, and racing was a much different situation then than it is now.