This is a big part of it.
SC doesn't want its players to receive a bad permanent or even semi-permanent record.
This is the exact reason why for clan wars, they only post clan wins instead of a win-loss ratio.
They don't want clans to look necessarily better or worse based on their win/loss record because it would be an influx of players bombarding clans with amazing records, and the clans with bad records would have a terribly tough time recruiting, causing frustration for members of that clan.
They want as even a playing field as possible for everyone.

