Have you looked at the NL East? The Phillies are the worst team in baseball, the Braves suck, the Marlins had rough starts from 2/3 of their promising outfield, and the third member was gone for significant time due to injury (and aside from Jose Fernandez and a few other notable players, their team just isn't that good); the Nationals, the only other good team on paper, underperformed a lot except from outstanding contributions from Harper and Scherzer.
The Dodgers are another team that feature two aces plus very strong depth at every position. What happened to them? You would think Kershaw and Greinke pitching 4/5 games would be a lock, considering that during the regular season the Dodgers' offense was much better. That's just the way the playoffs go.