Unless the game is stuck in the dark ages, you don't know what you're talking about, pretty much every game that supports controllers allows for aim speed adjustments.. There are many skilled controller players. I love killing fools like you online over and over again.I would love to see an PC 4 vs 4 game were, team 1 is joypad only and team 2 is keyboard and mouse.
Of course as long as the Keyboard/Mouse players are half decent players they will SLAUGHTER the slower joypad interface users.
Honestly if you want to restrict and slow down your moments , go play on a console with autoaim with a joypad.
Dont ruin the PC experience by using a joypad for an RTS/FPS/TPS