Which of the 2 statements do you believe to be true -
A) During an atbat, the sim determines whether the pitch is a walk, strikeout, or in play. Then determines once the ball is in play whether it's a hit or an out.
B) During an atbat, the sim determines whether the pitch is a walk, out, or a hit. If it determines out, it then decides what kind of out.
If B is true, then the importance of velocity is negligible. The only positive would be that a pitcher would be more likely to have an out with no runners advancing if he got a strikeout.