I mean, that's great. They're significantly worse offensively than we are. The difference in offensive fWAR between us (22.4, 1st in baseball) and them (15.0, 10th in baseball) is the same as the difference between them and Baltimore (7.6, 23rd in baseball).
This isn't a 'are the Brewers good in general' thing. It's a 'are they as good as us' thing. And they just aren't. Our top 8 guys by PAs this year are all above 100 in wRC, and 5 of them (Tucker, Suzuki, PCA, Busch, Kelly) are all AT LEAST 11 points better than the Brewers best hitter (Isaac Collins, 124 wRC, outperforming his xwOBA by 28 points). And yes, I know, Justin Turner and Matt Shaw. But their 368 combined PAs with wRCs of 68 and 71 are also pretty much offset by Joey Ortiz and his 327 PAs of 66 wRC.
It's baseball, things happen, the best team always wins. But being scared of a jersey because different players in different years wearing that jersey won some games isn't a logical train of thought.