Falconflyer
CGN Ultra frequent flyer
Ammunition, firearm, weather and more are all key to winning
True, they are all key to winning but lets break your statement down. Ammunition makes little difference whatsoever on the majority of targets under 35 yards., premium ammo can help beyond those distances but only if you know how to use it. Firearm, all too often I've seen new guys compete with old pump guns and do better than the guys with expensive fitted firearm's. So for guns and ammo, lets just say that Tiger Woods could still beat most everyone on the golf course with Canadian Tire golf clubs... why, because he has the ability! Weather... this is where having glasses with different lenses come in to play and you need a hat that will keep the raindrops off of them. Lenses that will emphasize the target color under different lighting conditions are important. I've seen lots of shooters go from bright sunlight out in the open all of a sudden not be able to see anything once entering shade in the trees with their dark lenses.
Good glasses certainly do help break targets but the most important thing of all is focus, hard focus on the leading edge of the target so yes, vision is key regardless if you wear glasses or not.