Having max FPS, a keyboard and mouse with almost no input delay, 20ms ping / DPI and an efficient keybind setup are surely major factors to make me better than the average gamer with FPS lag, input lag, high ping and poor keybinds.
Although I see you've bought into all the gaming companies advertising, have a look at the broodwar or GW1 pros. They didn't use any gaming equipment (until sponsored) it's a matter of preference. Not to mention lag doesn't make you a better player, it's generally an uncontrollable factor that can change only your gameplay (or sometimes your timings) I remember being able to q-step at 800ping while some of my friends just couldn't.
It seems the mark of a bad player to rely on equipment to be better, also begs the question; would you be any good without your equipment?
- what if your isp was going under and couldn't serve better connection?
- what if your equipment was damaged and you can't afford new stuff?
You would come off really negative from this, while a good player won't, if you see what I mean.