I played a similar formation in the 1st leg of the 2nd round of the cup early this season. Only difference was my opponent used ML/MR instead of AML/AMR. I used a 4-3w-3 and beat him 9-1. My team was higher quality though. Red arrows on DL/DR, ML/MR, blue arrow on MC. Attacking mentality, down the flanks, whole pitch pressing, short passing, hard tackling, zonal, no counter, no offsides.

with only one MC and no AMC, one MC was all that was needed to defend the middle. the formation lacks the offensive to really threaten a defense, making an attacking approach of down the flanks with 3 ST's very effective.