Over the last 3 series, in which both teams played the same opponents, the Braves run differential is 31. The Nats is 2.
We've needed extra innings and a ton of luck to beat the Astros. Oh, and we needed our pitcher to hit a 2 run homer. Sorry, but the Braves are playing outstanding baseball right now, even despite their mundane 3/4/5 starters. The Nats are squeaking out wins.
And despite all that, the Nats have picked up a half game.
Doesn't matter what the Braves do as long as the Nats continue to win.
Could the Braves pass the Nats? Absolutely.
Will they? That's why they play the game.
