Yes I agree with NADH:NAD+ ratio which is the redox couple at Complex I, but I was referring to MORE NADH and LESS FADH2 input from carbs versus fats. Higher NADH from carbs WOULD lower NAD+ which in turn lowers redox potential leading to more ROS generation. That's what I meant.
Ketosis raises NAD+ levels which raises redox and lowers ROS. That's what I'm saying my whole point is that fat burning generates less ROS than glycolysis.