User blog comment:D. Cello/Assassinews 03/05 -- ACWiki's Fan Section and AC3 first trailer/@comment-96.235.189.37-20120307030715/@comment-217.208.111.13-20120307183353

Ubisoft claims the trailer runs on the game engine. But I can't possibly believe in-game graphics will look this good. That would be insane.