I am undefeated in League and Champions League for the last two seasons. This is my third full season and I have still yet to win a Cup match, regardless of tactics or personnel used.
I made a post last season stating that I'm pretty sure the game 'fudges' cup matches to make them seem more exciting and I have another data point. Again, as the stronger team with solid tactics, I was undone by pure luck IN THE QUALIFYING ROUNDS for the third straight year. I have had that happen to me in maybe 1 other game in 3 years and even then I was able to manage a draw.
Last season I had over 20 shots on goal (and watched both matches, while my opponent did not, he missed the second game) to my opponents 3 shots on goal, and lost 2-1. I hit the post about 5 times.
This season I have trouble loading the game for a minute (perfect connection to internet) and by the time the game loads it's 2-0 in 10 minutes to an inferior team. End up making it 2-1 before the end. Second leg my best defender gets a yellow card and gives up a penalty in the first 3 minutes of the game (which they convert) and before the half is over they get a second penalty (making it 2-1 in this leg too.)
My two best defenders both give up a penalty in the same half while I'm using normal tackling. My opponent had a 1% possession bonus for his crowd and I actually had a 3% bonus overall in his stadium, and a 15% bonus in mine. I played to prevent the counter and lost to the counter and penalties. Last season it was to the post.
That'll be the end for me. I won't spend any more on an app that's 'trying' to even the score in the name of 'fun.'