Again, wrong, Hyperrealism has nothing to do with exaggeration. It is in fact trying to make something that is not real look as close to real as possible. Look it up. They would use facial expressions, something that before this in sculpture was not done, it was done so that the piece conveyed what the artist was trying to achieve, emotion.
And again, Since he's obviously in an action pose throwing his billy club for what reason would he be in pain? If you were trying to give him a sense of rage then it has failed. A battle cry? again failed. Sending mixed signals with the pose and facial expression again misses the mark of Hellenistic Art.
Makes me think you've never seen any Hellenistic Sculpture
Here's a few, ones I could find without Full frontal Nudity or at least that mostly covered
