To summarise:The Goon Squad wrote:I didn't understand perseverance
Basically the game combines the perseverance of all your players. If your combined total is higher than the other team then it will reduce home advantage (if you are playing away) or it will increase your advantage if you're at home. It also contributes to how you play when your team is losing. If it's high they'll play better than if it's not.
The game has an inbuilt feature to balance this out in the lower leagues.