By the time The Elder Scrolls VI comes out the history will already be written into the game, Bethesda will have to decide which faction actually won for them to make any reference to it in ESVI.
So basically, with there being 2 different options for how the world will become (Imperials or Stormcloaks prevailing) which faction will Bethesda decide has won when it comes to making the next game, because they're obviously going to make reference to the happenings of TES V is some way or another.
Thanks for reading my jumbled up mess of a OP.
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