Matsuri matching is based on level not power. Only way to win against someone who's that much higher power is to ask them to retreat and surrender. Maybe they meant you to ask for strategies to win Matsuri. I agree it is a terrible matching process and they need to give us more revivals like 6 more would be good. One strategy may be to do Matsuri at peak times where you will get a more diverse selection of opponents who match the criteria of being higher lvl than you after a win or lower lvl than you after a loss. A lot of it is luck. Some people lvl freeze to make it easier but if you are already high lvl you can't do anything about it.