Lol, lotsa folks playing headgames!
As tjalle posted, on shards that someone actually won, they couldn't do the quest anymore.
If you can still do the quest, it looks to me like the guy on Atlantic is trying to fool folks into not trying to reduce competition and thus improve his own chances at winning
Of course, it could be that the devs don't update the quest until the following morning. Still, you should do it. At the very least you'll get a go at the war chest.