Here is the conclusion:
"The tiny bit we might have learned from the numbers about Perez so far indicates is that he is going to take his swings and make contact. We might also initially say that he is not a fan of the free pass.
Now, those things is neither very exciting nor surprising if you looked at Perez’s minor league numbers or read what people were saying about him as a prospect. But that is not the issue here. The issue is how some people take his major league numbers on their own to mean something. Overall, they mean very little, and even what they can tell us about his plate approach is only slightly "stable."
That is not to dismiss Perez’s minor league performances or the scouting reports derived from them. On the contrary, given the near-irrelevant sample (with respect to estimating his true talent) of his major league statistics to date, his minor league stats and especially scouting reports are much more important. Perez is a very young player with loads of potential. But if you want to make that point, scouting reports are going to do far more work than what happened during Perez’s 198 major-league plate appearances to date."