Do you know how long the Great Hyperspace War took? Because in the comic it seems to take only a few days, maybe weeks. Which seems a bit short, compared to how destructive it is described.
Also, do you know what exactly happend to the remaining Sith afterwards? I have heard two different theories: either most Sith ritually killed themselves or they were killed by Republic troops.
They fled into the unknown regions and began rebuilding their empire. Then they come back 3,000 years later (I think) and begin a new war with the Republic called the Great Galactic War. This is the conflict we're playing through in SWTOR.