Each team enters a Star Battle with 100 Battle Points (the term used for how much points they can get for the Star Battle.) For each member loss, you lose 25 Battle Points, and each win is a increase of 25 Battle Points. When the Star Battle is finished, the amount of Battle Points you walk away with is added to your
Team Points.
The idea foundation behind this is that: The more wins per member, the more points you gain. However, the lowest amount of points a team can obtain 25 Battle Points at the end of the Star Battle, while the highest a team can get is an increase 75 Battle Points, in other words,
it’s impossible to not gain or to even lose points from a regular Star Battle. I’ve played this out per each format (Normal, Gunslingers, Roundout) and it seems to be a solid system. One thing I have noticed is that, even if a player counter-sweeps 3-0 while two members have fallen, the winning team only profits by an increase of 25 Battle Points, which enforces the nature of the event:
to work alongside your team. For those who are still confused on this, a diagram below should clear things up: although do note, this is in “Roundout” Format. (And also there is no additional points factored in from daily events, achievements etc etc)
(http://i.imgur.com/uWULttd.png)
Star Battle Point Calculation Diagram (Roundout)
You can Star Battle in any format, but each format will award you points the more members play and especially the more wins you and your teammates get from the Star Battle. (As a side note, Normal Format is the lowest amount of points you can win from a sweep because it’s best 2/3, so if you win 2-0, you only get +50 of total points.)