Doesn't work that way though. The Royals outscored opponents 51-11 from the 7th inning on. Overwhelming domination.
If instead they had outscored opponents 51-11 in innings 1-4, would that be any more impressive? No, but it would have prevented opponents from thinking they were going to win.
Because win probability swings back and forth during a game, both teams can cherry pick moments in which they had a good chance. The Mets can look at the moments they were in good shape and say they should have won, but the Royals can look at the moments they had 100% probability of winning to say they should have, and did, win.