FWIW, run differential and xBA both go the way of the Brewers for the series. Brewers probably outplayed the Cubs, but baseball happens. Move on, enjoy the day off, and go after the Phillies at home.
All this series means is the division isn't over like it would've practically been with one or two more wins. But I'll take starting with a 3 game lead entering the month of September any day.