What is the most offensive formation?

[Castreal]

I would still advice to go against a much weaker opponent using a counter formation, defensive at first to gain all possession, and later if possession is good can change to attack/hard attacking.

The way this game works, i believe, in my past 15 seasons, no matter how strong a formation can get, even an attacking formation, there is a counter. And you don't want a weaker team to win you on counter, e.g.: 4-1-4-1 will usually destroy 4-3N-3 (from my records).

Another note, defensive doesn't mean your team doesn't attack at all. Against weaker teams, you can gain a lot more possession, and I have won > 10:0 against weaker teams using defensive mentality, in the previous seasons.