Im not saying those stats are wrong, I'm saying you are wrong by claiming his defense is knocked because he didn't get to 2 balls over the course of 4 months. You aren't understanding probabilities and basic statistics.
Routine (90-100); he has made plays on 144/144....nothing substantial here.
Likely (60-90), he has made plays on 14 of 19 balls....74% of the balls. You could probably safely say, he's about average for this
Even (40-60), he has made plays on 4 of 11 balls. He should have made the play on between 4.5 and 6.5 balls so below average here.
Unlikely (10-40), he has made 0 plays on 4 attempts. Statistically, he should have made a play on at least a ball, but the sample in way too small.
Remote (1-10). He made 0 plays on 14 attempts. Again, small sample, but probability says he probably should have made a play.
Of course, these are over a small sample and he has aggregate numbers for the past 5 years as well showing his limitations.
There are also other measures for range and arm and inability to prevent a double, etc. Matt Kemp doesn't have bad defensive statistics bc of his inability to catch "2 balls he should have caught."