Zappe is the guy.
Jones had his opportunity to respond and kind of flubbed it. The same traits we've seen all season: issues in the pocket, seeing the field, decision making, turnovers, etc, all were present from the jump.
Zappe has limitations he needs to work on/around, no doubt, but Jones just lacks something that Zappe does not. Maybe it's mental toughness, confidence, moxie, maturity ... who knows, but you know "it" when you see it.
It'll be far from perfect under Zappe but he's consistently demonstrated traits I want in a quarterback to a much greater extent than Jones (to my eye, at least).