That is what's known as anecdote. Or a low-probability event. Could happen, doesn't mean it will. (Just like the Phillies blowing a 96% chance of the playoffs on September 14).
Also, how did the Phillies do against the Dodgers in the 1977 and 1978 regular season?
The Mets match-up is less about the season series as the pitching (and no less applicable with the Braves). On paper Mets cancel out any advantage Phillies might have with Wheeler and Nola. Cardinals don't do so at nearly the same level.