If we just look at final results without context, I think we miss a significant part of the real story behind our progress, what we should expect and what we should do going forward.
I judge Coordinators and coaches by both in-game results (production) and final results (wins/losses), but I always try to put it in the context of what they're working with in terms of talent (and also judge their role in choosing and acquiring that talent). My understanding of what a coordinator should do is to maximize the capacity of the unit (made up of individual players) available. Therefore, here's what I did: I quantified what I believed each unit is capable of and then judge based on what they actually do (effectiveness).
Defense
If maximum effectiveness with our current talent/players on defense is a 68 out of 100, we're probably doing a 52 for the season, whereby we did a 62 last week and a 44 this week (given that we were missing 3 of our 4 best defenders).
Season = 76% capacity
Last week = 91% capacity
This week = 65% capacity
Offense
If maximum effectiveness with our current talent/players on offense is a 79 out of 100, we're probably doing a a 64 for the season, whereby we did a 55 last week and a 68 this week (given that we were missing our 2nd best WR, but points total was helped by special teams and a safety).
Season = 81% capacity
Last week = 70% capacity
This week = 86% capacity
Comparison
So, by these numbers (that I acknowledge I have calculated based on both subjective and objective data), I think our coordinators are doing their jobs at much closer rates of effectiveness than most fans would view on the surface. Fisch is doing more with more, and he's even being more effective in his % of capacity, but it's basically a B- vs. middle C.
Conclusion
My conclusion is that, based on these numbers, neither should be fired, but we have to demand that our coaches are at a consistent 85% and higher.