I think we would all have liked the Cubs to sweep the Cardinals, but sweeps are hard no matter the team, and winning the season series while basically forcing the other guys to sell off all their good players is fun too. But it hasn’t been just the bad teams that the Cubs have done well against, as I remarked on this FB thread and also as shown from the B-Ref breakdown below:
I believe the Cubs have done enough to get some additions pending the efforts of Jed Hoyer’s front office.