User blog comment:Master Sima Yi/Assassinews 04-06-'12 — E3 hub/@comment-220.255.2.103-20120607125500/@comment-4043223-20120607140947

This is more a PR thing by marketing to make it more appealing and awesome (or so they think). In reality I would say the game can be played very stealthily depending on each players play style.