Just tried the defensive 4-3-2-1 in Cup against a 4-5-1 V-Style opponent (both quality 26,7) which resulted in equal ball possession (51:49), more shots on my side (14:8), less shots on goal (4:6 which might have to do with the individual players) and a final result of 0:2.
Gonna go for the 3-2-2-2-1 butterfly in the second match (at home)...