Create a superstar. Duplicate him thirty times. Start GM mode. Turn off every superstar and only leave on the created superstar. The other two brands will be left with the CAW at 20 popularity. Turn on the superstars again in available draft the next week. When they become available, sign them. You will win the ratings easily.

Send your superstars on trophy dates until their popularity reaches 100. Once it does it usually stays there and will only come down a point or two. When all your superstars are at 100 you can just maintain the ones at 99, 98, etc. This will give you easy four star match ratings. Have as many rivalries as you can, and a few weeks in you will get five star match ratings.