A lot of people have been complaining about the decisive bonds matching system, I think a good way to fix it is to use the arena mechanics where everybody is set to lvl 100 with only their initiative stat remaining same.
This way it will be a much fairer system where it would come down to a players skill, the higher level/power people would still have an advantage (but a bit less significant) due to their higher initiative( which is arguably the most important stat in the game).