What should be most alarming about the OP's stats IMO is that those are Goltz's FIRST 2 STARTS IN THE LEAGUE! Whereas Buck is an established veteran. His numbers should be FAR better than what Justin did, or at least marginally better to justify starting a injury riddled 31 yr old over an up and coming 26 yr old. The fact that the numbers favour Justin, or are too close to call definitively, SCREAMS that Buck shouldn't be ahead on the depth chart.
Goltz feeling betrayed is to be expected. He joined this team with the understanding that no matter how putrid a QB you are, they give you at least four seasons as the starter before you're demoted to back-up.