That's the opposite of my tasting. How do you plaied it?
4-5-1 is pretty nice against 4-4-2. When I play it, I use normal ment., mixed passing, mixed passes, no trap, no CA. Red arrows on ML/MR/MC (middle). It has never failed me.
But, 4-4-1-1 isn't bad neither, the AMC often makes the difference.