John Brennan and I had a joke about the medal - Robinson and Powell look like they're waltzing around Seward's bed rather than fighting. Seward looks so calm - like he's sleeping. And yes, the gun is depicted on the floor, but it always looked to me as if the Whitney revolver is more or less a derringer rather than a pistol.
Powell's nose appears to be too aquiline and he has long sideburns. Doesn't look a thing like him IMHO. Also, the hat is not shown on the floor and he's not wearing the overcoat - just the frock. Oh, well - you can't have everything! HA!