I agree with you on the fact that baseball is one of the most unpredictable sports; therefore, you’re correct - any of those twelve that make the postseason could win it all (including the Cubs).
Personally, I just see something off with the team MORE than some of the others you mentioned (Phillies, Dodgers and Padres just to name a few). Records do reflect a team’s overall performance of the season - no argument there. Again, not to beat a dead horse, but the Cubs’ inconsistency is what concerns me as a fan is all. 🤷♂️