Our O wants to run what, 80 plays? How can we do that when we only have the ball roughly 8 minutes in an entire half? If the other team is cramming it down your throat chewing up the clock, then you O has to score almost every possession to maintain an even keel with the opposing teams O and you can't make mistakes b/c your D can't stop them from scoring.
Our D has to get off the field on 3rd down, we do that, they aren't scoring which makes them have to play catch up and get "cute" which results in mistakes that we capitalize on. We aren't doing that b/c our D sucks and we have to try and get everything out of every offensive possession. It leads to mistakes.
Even if Gus did have a shitty game and I am not saying he didn't. He should be able to have a couple of brainfarts and have a D to get him the ball back without the opponent scoring every single time up the field. Vice Versa for the DC. Right now, Gus doesn't have that luxury.