Have you ever actually played competitively?
I can tell you that making a game have the same senstivity as another, isn't as simple as just "adjusting" the sensitivity. And you said it yourself. "Adjust it, and if its wrong, adjust it again". So how many times are you adjusting your sensitivities until "eh, its close enough". Game sensitivity options are barely ever precise, and most use notch systems. I'd love a calculator to just go "heres your number, punch it in, and your good to go."
I would never call that counter-productive.