No one "should" be on that list if the list is based on a historic formula and he does not do well on that formula. They aren't going to fix the formula so that someone who does not score in the top 10 appears in the top 10.
JZ, by the way, would score:
[(5*128.333 IP)/9 - 33 ER] + (90 K/12) + 0 SV + 0 SHO + [(7W*6) - (6L*2)] + 8 "Victory Bonus" = 83.8
He's hurt by his won - loss and his lack of Ks. If he were 10 - 3 instead of 7 - 6, he'd have 24 more points and be just ahead of Cain. If he were an 8 K/9 guy, he'd have 2 more points.