Did anyone ever tell you that all caps and/or bold is a method of shouting on the Internet and considered quite rude?
DocH is absolutely right. Equipment does make a difference. Shooting one's way through the A class with a single stack is possible, but shooting with the master's on high round field courses is best done with something like an STI Eagle in .40. I have shot my Baer Premeir II side by side, one right after another with an Eagle in .40 and there is a difference for sure.
For guys who have shot single stacks for years, can reload like a bat out of hell, waste no time moving and setting up, have mastered various sight pictures for varying yardages, the move to a hi-cap that holds more rounds and recoils less can make a difference.