I have never heard of "step style" pitching. What does this mean and what are the other styles?
In my experience the speed is not everything, it is the speed of the spin that counts .
Many yrs ago when I was in college, myself and another buddy of mine tried to walk-on for baseball. This was at a major D1 school with a top national baseball program. I could have likely played at a smaller school, but I was there to get an education, they had a very strong department.
We both got cut. But the point is my buddy was a pitcher. They took another kid that had overwhelming speed instead of him. He was told he had good stuff, and good control, but they were taking the other kid that had poor control but great speed. They told him they believed that they could teach the other kid control, but they probably couldnt add much speed to my buddy. The kid with the faster speed had the most potential.
And that is why coaches go after speed. Faster pitchers have more potential.