User blog comment:AveryWood/Reasons Why Going With the Empire is Better/@comment-1786741-20120817053847/@comment-3202167-20120819234402

Not really. For what we know, they could all just go choose somebody else who they think will be a better high king than Ulfric.

Honestly the Civil War does not matter. Cannon wise, they will probably mix both endings up and make your choice basically un-meaningful.