It almost seems natural that Ingruber would get the nod.
But to me, he's like a robot. Full disclosure I have no idea his quality as an actor in his own right.
However, if he does get the nod, Id actually prefer he tone it down a bit. It's almost a caricature how spot on he is. It would be too distracting.
I have this same issue when watching actors portraying a historical person. I just sit there and think, "he's doing a great impression...but its not him". That would totally take me out of the film.
There is a danger in hiring a guy who does a great impression.