Here are the Cy Young candidates and how they rank vs. the average pitcher in their league. I use OPS allowed, which is on base percentage allowed plus slugging allowed. I use this as it really is the only thing that the pitcher has control over - namely, how many people get on base and by which manner they get there.
In the AL is Season 25, the average pitcher had an OPS allowed of .767.
1. Kenneth Crabtree - OPS allowed of .545, or .222 better than average
2. Timothy Crawford - OPS allowed of .597, or .170 better than average
3. Albert Mondesi - OPS allowed of .617, or .150 better than average
4. Rocky Hinch - OPS allowed of .633, or .134 better than average
5. Ezdra Mateo - OPS allowed of .700, or 067 better than average
It looks like either Crabtree or Crawford, depending on your willingness to give it to a reliever.
In the NL in Season 25, the average pitcher had an OPS allowed of .740
1. Hideki Yang - OPS allowed of .578, or .162 better than average
2. Cesar Reyes - OPS allowed of .634, or .106 better than average
3. Francis Adams - OPS allowed of .665, or .075 better than average
4. Edinson Lee - OPS allowed of .718, or .022 better than average
5. Eduardo Cortez - OPS allowed of .723, or .017 better than average
Again, either a reliever (Yang) or an SP (Reyes)