I usually try and stay outa these, but I'm gonna toss this out...
I don't shoot "groups"..... EVER! I shoot 1 arrow, and go get it. I want consistency in my shooting, NO misses.
My money is on the guy who can put EVERY arrow in the "kill zone" from 3 yards, to 30 yards.
Years ago, when my boys were young, I was in an Archery Club. We had a family membership.
After every 3-D shoot, we had to walk the course to make sure everyone was accounted for.
A few of us Trad guys would volunteer to walk the course. We took our bows, and one arrow.
When you lost your arrow, you were done.
The "winner" was the one who shot the most targets, with the same arrow.
The first time we did this, Our best shooter, the guy who always shot the tightest groups and won all of the indoor tournaments, lost his arrow on target #7... It got to be a game, and we started getting together a couple times a week, for what we called the "one arrow challenge".... ALL of us, saw great improvement in our 3-D scores.
Perfectly matched equipment, gives people confidence.... But practice, makes perfect!!