I don't even know dude, maybe that it just drove over the top and the sledgehammer is more force in one spot? I made a thread showing the damage awhile back.
You have to highlight the CPU ratio field and then just type the ratio, you don't need to press enter to "select it" than just press enter when you finish selecting the ratio.
I mean it depends really. The responsiveness of the keys may help in a way with things like Counter-Strike where you need to master pressing A and D and firing at the same time but other that probably not.