Balance is another of those terms that is definable only in the eyes of the person who says it.
Does balance mean an equal number of passes and runs? Does it mean equally good performances among the 3 units? What does it mean?
Superbowls have been won by "unbalanced" amounts of running or passing. Or by one unit, or all units, playing and executing on a high level.
In a one and done playoff scenario so very much has to go right. Not too many injuries. Some lucky bounces of the ball. Some close calls that go your way. The other team screwing up. A few people playing out of their heads. And that's just for starters.