Reaction time is important. I think that you can train that a little bit and improve it.
I'm 31 and I notice that my twitch reaction precision is not what it was, but that is more for computer games. Pinball you don't have to aim the button, just hit it. So only reaction time comes into play.
Quoted from Dooskie:To me, if I've missed a shot and it's coming right back at me sdtm, it doesn't matter who you are, you're not saving that ball.
I think they were referring to fast movers that are savable if you spot it and react accordingly in time.
I've seen a ball at just the right angle go through the inlane so fast it goes past the flipper and drains if you don't have superior reaction time.