It wasn't an Asian flaw it was that most of the cast was made up of martial artist/stage combat specialists and not actors. Hiroyuki Sanada did a fantastic job and is a great actor. I think what you mean to say is your reading skills are sub-par and can't read while perceiving emotion. The biggest flaw was editing and an unattractive use of nostalgia pushing the movie to be a bit forced and cheesey. Some of the worst/over-rated actors are perceived as great simply due to a good editor.

"The belonging you seek is not behind you, it's ahead."
--Maz Kanata