Recently, we introduced a "soft rule" for the matchmaker in Enlisted - when there are enough players available, it tries to create sessions where the maximum difference between the Battle Rating of participants is no more than one.
We have collected enough data to make this a "hard rule" for BR I. It means that BR I won't be matched against BR III anymore, only BR II. For all other BRs, this will remain a "soft rule" for now.
Thank you for your feedback!