If I showed you an Emile Heskey goal compilation and the goal highlights of Gary Lineker you couldn't tell me which one was the natural finisher? They're all goals, right? By definition, a goal is scored, therefore the move was "finished" the scorer a "finisher," possibly "natural."
No, it's not just the fact a goal was scored that makes a finisher. You can tell even from the bloopers showreel which one is which. It's how the goal is scored (and how often in a season).
Was the goal scored using classic strikers technique? Did the goal require anticipation, great positioning and great movement? Does the player have a perfect first touch?
I'd argue that James Wilson's goal compilations, and number of goals he has scored, show he has these marks of a natural finisher.
Another clue he is a great player already is he scored two goals on his debut appearance for the first team which is impressive in itself. It was a big game for him. Shows he's got the big game mentality.
Utter bollocks.