The Cubs were 56-48 from June through the end of the regular season once their teamwide offensive onslaught started regressing to their actual talent level, while the Brewers were 66-37 - which includes a 12-12 september while coasting to the finish line. It should also be noted that as the Brewers were creeping up on the Cubs in the standings in late June, all we heard about was how the difference in schedule strength would likely sink the Brewers compared to what was left on the Cub schedule. The exact opposite happened.
The fact that the Brewers went on an extended hot streak through what was perceived to be a difficult stretch of their schedule while the Cubs treaded water through what was supposed to be a cakewalk of a 2nd half slate of games should make it all the more obvious that there is a significant gap between the teams when it comes to talent and roster construction. Vaughn was a former 3rd overall pick. Turang was a 1st round pick out of high school who had some helium as a junior to be the 1st overall pick. Frelick was a 1st rounder. Chourio is a generational talent. These guys are far from unknown talent. There is also pitching talent all over the roster with stuff that can mow through playoff lineups. And, there is more impact talent in the minors league system on its way, as the Brewers are among the best systems in all of baseball.
Just because the payroll for this roster isnt $200+ million doesnt mean the Brewer roster isn't better than the Cubs. I do agree that the Cubs have made some questionable decisions on who to hand bags of money to - starting with their manager. I also think pitching injuries have really hamstrung the Cubs in the rotation....but then again after seeing Steele's workload and what they did with Horton in terms of innings pitched jumps it was pretty predictable (also why I think Boyd is scuffling down the stretch). Ill point out the Brewers have dealt with plenty of significant pitching injuries this season, too.
All that being said, would it surprise me to see the Cubs win today and then we're all on pins and needles about losing this series? Not at all, it's playoff baseball. An 83 win dog of a Cardinal team won a world series. Quite frankly it has and always will be the Dodgers and everyone else in the national league until baseball's insane economic model gets fixed. But it's damn fun rooting for a Brewer team that plays hard and can win games so many different ways.