Sabathia is definitely worth being excited about. He doesn't make a HUGE difference for the regular season, but he's a clear upgrade that can have ancillary benefits, and he does make a HUGE difference for the playoffs if the Brewers make it there. This doesn't make a HUGE difference as far as the Cubs are concerned. For one, both teams can make the playoffs rather easily, so even if Sabathia propels the Brewers to 110 wins by starting every 5 days and putting up 2001 Bonds numbers with gold glove defense at 3B the other 4 days, the Cubs can still make the playoffs comfortably by beating out the Cardinals. Secondly, as it pertains to the Brewers overtaking the Cubs, the Brewers fans in general seem to be overestimating their true level of play. While it's true that the Cubs started white hot and the Brewer offense stumbled, there's not a ton of proven performance for the Brewers offense to be sure they'll return to. All of Fielder, Weeks, Braun, Hardy, and Hart only have one previous season of above average performance. That's not to say that they're all one year wonders, that'd be ridiculous, but the level of certainty that they'll return to that level is significantly lower than players with the history of Soriano, Ramirez, Lee, and to a lesser extent DeRosa. Also, while the Brewers have closed the gap on the Cubs, they haven't really shown they're up to the Cubs level in terms of run differential. At the Brewers lowest point, they had a -26 differential while the Cubs were +79. After today, the Brewers are +11 while the Cubs are now +102. That was way too much text, but the short of it is this. Sabathia improves the Brewers(especially for the playoffs), but not enough to put them on par with the Cubs, especially since they are a bit overdue to fall further behind anyway.