More or less. I’ve had my tangent.
Regardless, we don’t know the full story of this scenario and are missing very key points of the story. But as of what we can see at this point, it seems as though the cooperative forces of all four covenants were being pushed to the breaking point and Tyrande alone comes in and (despite exhausting herself in the process) singlehandedly pushes the Maw forces to retreat. And it really was just the WQ screwing up, not Tyrande.