How does a pitching machine compare to a thrown pitch?

Answer 1

It compares very well. In fact, it is easy to build a pitching machine that NOBODY could hit a pitch from, so the pitching machines are designed to simulate real pitches, and are adjustable.

The nice thing about the pitching machines is you can set the more expensive ones to do all sorts of pitches which can really help you improve your batting skills. It's also great for when you can't find anyone to practise with.