Look at Loudon, 1999.....
http://racing-reference.info/race/1999_Dura_Lube_Kmart_300/W
Joe Nemechek won the race (30th in points) in the Sabco 42 car, Rick Mast finished 9th (32nd in points) in the Yarborough 98 car, and Hut Stricklin (43rd in points) finished 16th in the 58 car owned by Scott Barbour, whoever the hell that is.
That is the equivalent of David Ragan winning, Matt Dibenedetto finishing 9th, and Cody Ware finishing 16th.....all in the same race.
That kind of stuff happened all the time, it wasn't just this one race. Gordon and Martin and Jarrett and Wallace and those guys won a lot because they were the best drivers in the best cars, and that's how it should be. But there was so much more parity across the board and so much more opportunity for the "have nots" to compete. If you don't believe me, look it up, pick any random race from 1994ish to 2003ish and see for yourself. The results from first to last were wayyyy more of a mixed bag week in and week out, which I believe was healthy for the sport.