It matters a great deal. Hit the sweet spot and the rest of it becomes much easier (less difficult?).

Mine was 9.6 for what I was doing. Yours is probably different. Every combination is. Weight & bias, power, suspension, tire, track, what you are trying to accomplish, etc....

I had everything from 1.76 to 2.74 in mine with a couple of different rear ratios. A four link and good shocks will let you get more aggressive with it.