I think there's more of a curve to it than that. A really crappy gun can run 10,000 rounds without an issue if it's cleaned and lubed every 10 rounds where as a really good gun can fail past 2000 rounds if running dirty ammo and no maintenance. And, 1911s do need maintenance. I had a compact that I ran Wolff springs in that had a 400 round life. It was an island gun and most likely would not have made it through a 500 round class, but since it was not designed to make it through 500 rounds without a spring change, would that count as a failure of the gun or a failure of the owner?
I do wish I had the money to run all of my 1911s to the failure point to see how they compare. It would be interesting to see how compacts compare to full size guns and how the different types of springs impact the function. The CCO runs a standard GI style short guide rod and single spring where as the Kimber Compact runs a reverse plug full size guide rod with a flat wire spring. I'd be more than happy to run these guns until they cried uncle if some company would sponsor me with a few pallets of ammo.
