As of the latest patch, if someone has a hero that is 5+ higher than you and has more crit. You lost. You are only wasting your time if you stay in the game. It also punishes you when you get roflstomped by a whale. It does not account for the fact that you can come across someone with L20 hero, 3k+ crit, and max level towers. So as long as they have less trophies you will lose 30+. Was really fun but I find myself losing interest more and more....