They stole the HP bar from Shenmue! They used the exact same thing when you were in a battle in Shenmue.
This game looks so so, well looks great but it seems to be mostly cinematics and very undetailed worlds, as far as interactivity goes.
edit: Nah, I haven't seen the trailers. I'm not giving my final judgement because I could be certainly wrong but from most of those pics is where I based that on.