I'm really curious as well about how much do we influence the game. As for today, the new formation and tactics have gone well, won in the league 4-0 in the face of a 15 % weaker oponent. And played 2 level 6 friendlies and also won 3-0 and 3-1.
Last season I lost Ch. League title to 20% weaker oponent no matter what i did...he had 3-0 at half time. As for the cup lost in the semifinals to a weaker team...for all the matches i used the recomended tactics from this forum, max win bonus, full moral, full energy annnnnnd LOST . I really hope the results are not pre-match generated.. .
PS: used recommended counter-formations