Just after 9/11 we did a little of that in the Canadian Forces.
In static drills, the irons did well. In low light, or with a moving target or with the shooter moving, the red dot was VASTLY superior.
When you put low light, moving target and moving shooter it was not even close.
Now if you shoot at a static target on a sunny day from a static spot, irons are good to go, of course thats not really realistics...
I had all that data on a computer years and years ago, and I probably posted some on the net, but its easily quantifiable with 5-6 guys and some range time.