Life is not fair.
I came across this formation 2 days ago and won 0-3. I went with a 3N-1-4-2 formation. But frankly these illegal formations with 80% possession are tricky at the best of times. They still have the same amount of players and can win just as easily. What I dont understand is that if you have 80% possession, how the other team can get so many shots on net. If you have 10 shots on net with only 20% possession then something is bound to go in...and then something is wrong.
I am all for automatic losses for illegal formations. 3-0 win by default. That would prevent people from doing this. A warning from Troll Mourinho comes up saying you have an illegal formation and you will default the next game if you continue with this formation.