A 4-5-1 V or 4-1-1-3AM-ST looks ok for Colossal .
Then I guess you have to try some things if can work
like attack/high pressing/off-side
or def/counters/mtm/long balls

I tried in some games vs Stronghold to play hard attack + high pressing + off-side with the hope to end the game with some 2-3, 3-5 scores and grab few points but it seems impossible to score even if I have a little better b.p. (with the help of the friends) and almost equal shots

So it's the q difference (112 vs 158%) + some "hidden" engine tricks.