Once he sees the National League pitchers in real plate appearances two times through, he's going to be a dangerous hitter surpassing the .850 OPS mark, in other words, during his second 500 Plate Appearances in the majors.
Seeing major league pitching and recognizing doesn't help much until you've seen it from each individual pitcher as all of them are different and unique. I think he can already hit Major League pitching if it was coming from a machine. But, coming from a different pitcher each time out, it's never the same pitch.