I guess I should clarify what I meant.
It was more of a "if you're a B shooter, really you should focus on other things besides gear... because you're a B shooter..."
Sure, if you want to finish better at a match you can game more... but does it really matter if you finish at 64% versus 61%?
Changing divisions is a completely different thing due to differences in optics and magazine capacity (which does play a significant amount in scoring, I believe).