@NunzioDaGreatest_PSN
Hey, thanks for the response!
In this case- the players are exactly the same. They're both RTTS players, and they have exactly the same... well, everything. Batting stance, swing, height- they're copies of each other, with the sole exception that they play different positions and one is more advanced (I've played them longer) than the other.
I'm definitely not going to discount the mental factor. You could very well be right, that maybe I had a couple of bad weeks with player 1, got annoyed/frustrated, and that's led to poor play. I sat in practice mode and recorded about 30 pitches (without swinging), and did the same for player 2, then watched them back; taken out of the game and looking only at how I view pitches, I saw only very tiny differences, where before I was absolutely sure I could see the ball better with player 2.
I took a few days off, and changed the batting stance for player 1- I was using a random stance (veteran 48, I think) and I switched her to Mike Trout just to get a bit of freshness into it, and my hitting on that player started going up again, so I think you were definitely right.
There are still some little things that I wonder about, like the ratio of contact to power and how it effects things, whether the higher vision/contact, regardless of power, leads to different outcomes.
Also, you mentioned precision rings- I do use those! A few of the other suggestions are things I could definitely work on as well. Would maybe bumping up the difficulty help me be a bit more patient and help me with anticipation, do you think?
Anyway, thank you all for the help. It's much appreciated!