User blog comment:DynamitMC/The Reasons Why A Teitoku Fails to Do A Certain Map/@comment-26922242-20150909205826

I think a big factor for map and event failure is that some TTKs refuse to change their strategy or cut their losses. If something isn't working, certain people are quick to chalk it up to RNG and continue trying to brute force their perhaps less-than-optimal tactics. They may assume that their repeated failures are shared by everyone and to be expected, and neglect revising their plans or waiting for additional information.

And then there are situations where someone will keep trying to clear a map on a difficulty that they cannot handle, stubbornly refusing to lower the difficulty. This results in extreme resource shortages for later maps, if they even manage to clear the map they were struggling with. Of course, there are maps that you CANNOT compromise this on, such as this Summer's E-6, where everything at an Admiral's disposal should have been used to clear the map on medium or hard.

Another note is that if newer Admirals do not have at least a few competent ships from every class, this will cost them dearly. CAs, CVs, and CVLs I have often seen neglected with regards to leveling. And some people only have a couple DDs in good shape, and you need SHITLOADS of those for events.