Kyler Murray weekly numbers with standard scoring
BUF - 14.18
LAR - 28.54
Det - 14.78
Wsh - 9.98
SF - 24.1

Cousins
Pit - 6.2
Phi - 17.54
KC - 11.1
NO - 7.52
TB - 34.36

Murray has been under 14 once. Cousins has been under 14 three times including twice under 8.

I'd be more confident with Murray. I think it's more likely that Atlanta will have the lead in the 4th quarter than I believe Arizona will have the lead late against GB.
Also, Murray runs. Cousins doesn't run.

I think Murray has the higher floor.

Most "experts" seem to disagree with me, but that's how I see it.
If Fields plays, I'd take Fields over Cousins too.