Adding on to this thread the results of the race gun nats shows that the gun doesn't matter all that much. JJ got 2nd with a 92 variant open gun. The top 3 limited shooters all shoot plastic guns in a 2011 division. One of them shot minor with a plastic gun.
They are all also sponsored shooters by those companies so I won't pretend like it is their primary choice. But the gun matters a lot less than I want to think it does. The most popular gun in production (shadow 2) has never won a national championship. It shows the shooters not the guns win the championships.