According to 538:
Dodgers 74% chance of getting to the WS; 54% chance of winning the WS
Astros 61% chance of getting to the WS; 22% chance of winning the WS
Braves 26% chance of getting to the WS; 13% chance of winning the WS
Red Sox 39% chance of getting to the WS; 11% chance of winning the WS
As I said yesterday, the Dodgers are the favorites, not the Astros.
The Sox have a better chance of making the WS than the Braves, but even so a lower chance of winning it.