...I don't see how even any of that would be able to compromise the 80-Sath fleet.
Then I'll give you the classic example of blowing your numerical superiority to hell: Midway. By doling out its carrier and surface forces in penny packets to multiple operations in the same space of time, Combined Fleet failed to maintain superiority at the point of fire despite having vastly superior forces.
The 80-Sath fleet can make the same kind of mistakes and let itself be picked off in twos and threes by attempting to accomplish too much against a broad, and essentially irrelevant, GTVA front.
Again, lack of imagination. There are plenty of ways to screw up.