Harder to steer, if you are using power assist, no. However, what fast ratio steering does is make a car feel "twitchy" and very sensitive to inputs at higher speeds. At 75 mph highway speeds, it may feel like you can change lanes by flicking your wrist. Generally speaking, the higher the speeds the car is used at, the slower the steering speeds tend to be. Uber fast steering ratios are great for autocross, disasterous for top speed events.