Jeffers and Catcher ERA

By my eyes I believed Jeffers is better at handling pitchers than Caratini. I would even said the difference is significant. I went to Fangraphs and Jeffers is a -1 for his cERA and Caratini is a +1. Yikes! My eyes must be way off. Sure enough Jeffers has a catcher ERA of 4.59 with Caratini at 3....