Because I am manipulating the Cup in my sub-account ... so it's based on my experience from manipulating the team quality in my sub-account and simply having a 6-star team at the end of every season in my main account. For my main account, because of possessing a 6-star team at the end of every season and I do not sell off any player of my team, I usually face teams 2-5 levels above me in the Cup in the following season. So actually keep the quality of your best 14 players 5 stars and below, you will get better chance to win the Cup.