I have some reasons to believe the system is computing the wrong strengths (quality) of the teams.

Since this new update, I saw something strange.
A friend called me to watch his match and support him (+2%) cause his opponent was stronger than him (like 10% more). When I got into the screen where I choose which team to support, my friend's team was shown as much stronger than his opponent. It was a surprise for me. And he easily won the match.

I didn't record these numbers, but I started paying attention to other matches and I saved some screenshots. Take a look with attention and tell me if there's something wrong.

Click image for larger version.  Name: Quality1.jpg  Views: 99  Size: 98.1 KB  ID: 90878
Click image for larger version.  Name: Quality2.jpg  Views: 99  Size: 97.3 KB  ID: 90879
Click image for larger version.  Name: Quality3.jpg  Views: 100  Size: 97.7 KB  ID: 90880

Is it related to the "3 troll results" I had in a row or the game just wanted to troll me at all? (2 of those 3 teams are inactive - they have no manager)

Click image for larger version.  Name: troll 1.jpg  Views: 100  Size: 97.3 KB  ID: 90881
Click image for larger version.  Name: troll 2.jpg  Views: 100  Size: 95.6 KB  ID: 90882
Click image for larger version.  Name: troll 3.jpg  Views: 100  Size: 65.2 KB  ID: 90883

Another bug is that I always leave my team with 97-99% condition before the match starts. But in the formation screen, the condition bar of some players (maybe half of my team) is being shown like they are on "80%" condition. So I click on the player to check it and he is fine, with 99%. (I will screenshot it before the next match)