User blog comment:Master Sima Yi/Assassinews 05-08-'14 – Assassin's Creed: Rogue announced/@comment-24595865-20141101132114

I think the reason why some are more interested in Rogue, is because it builds on the story of two major games in the series. Unity can't make that many references to the earlier games, which is why it's not necessarily as exiciting as Rogue story-wise.