There is a similar analogy in motrocycle road racing. There is not all that much difference between the 600cc lap times and the liter bikes. However, if they raced against each other the smaller bike has no chance assuming equal rider skill. The bigger bike can out accelerate to a large degree. The same thing holds to some degree in MX. Look at La Rocco's leap. Only Baggett cleared it while a good portion of the 450 field did it on every lap. The power advantage makes passing harder even if they can do the same lap times.
You also have to admin that there was a lot more of a race with the 250's. Looking at the times Dungey was able to ease off a lot more in the closing laps because he had such a lead.
If what you are trying to say is that a big bike isn't always the fastest, I'll agree 100%.