A lot of the game is down to random generator rolls.

Not aware of any AI changes that have gone in lately other than draft related in MFN-1; even if there were, they are in MFN-1 till ready to push widely. General ethos is to only push across leagues when there's a number of changes, so for example recent changes to Zone vs run game are in MFN-1, nowhere else as waiting to see effect / want more things to be deployed.