I think the best way to answer this question is to use an analogy that is unrelated, yet represents the principle very well I will make.
If you run a car on a drag strip, you will be categorized into a slot. I.E. if your run times are representative of the category of "Super Stock" you will run against others in that category. The "tree lights" come down the pole at the same time. Then it is up to YOU and how strong your car runs, inside that category, to determine if you win. The key is "inside that category". There is a time spread inside that category. You can run Super Stock and barely make that category, OR you can run at the TOP of that category. The difference is YOU and your ability to drive AND the level of equipment in that car! The same with shooting disciplines.
I shoot F-Open. I am a "High Master" at both Mid-Range and Long-Range in F-Open. I have shot against the likes of Mark Walker, Ken Dickerman, Dave Gosnel, Dan Bramley and John Myer. They are ALL High Masters at Long-Range and Mid-Range too! On a day that is going MY WAY (all the stars line up for me) I can be competitive against them and may even beat some of them. BUT as a general rule, especially at Long-Range, I will lose! I am simply not in their "realm" even though we are ALL High-Masters. In THEIR REALM, it may very well come down to one point or even just "X" count of who will win. At that level, if you don't have the VERY BEST equipment, you may compete BUT the chances of a win against one of those guys who IS using the BEST OF THE BEST equipment, is diminished to some degree. So if you want to compete against the BEST in the particular discipline you are in, you had better use the BEST equipment to gain EVERY advantage there is. Why make a $$$s mistake? If you are shooting F-Open often, you will burn up more components during the year BY FAR than whatever the difference in cost there is between a trued up Remington and the cost of a B.A.T. "M"! So if $$$s is in the equation, look at the cost, over the competition YEAR and see just how much money is being spent on components>>>don't be stingy on an action.