i m managing everton.
i tried v4 ,v2 , v6 all of these are useless against stronger opponents. GKs are always facing opponent's forward.I always getting 5+ goals when i play against Man utd,Chelsea,Man city
not using best team in world when testing mate, tested with juventus first and totenham nextEhh... I also tried V2 and V6 and didn't have any success with it. I don't know maybe it's because you need the best team in the world for this tactic to work but I used it with Totthenham and was ripped apart almost every match conceding more than 4 goals.
v4 with totenham
make sure you max back four cohesion and remove player with ppm "mark opponent tightly"
and if you doubt see game status each version when tested