I tried to get Grey’s models (he has two) and 47’s model together to do a comparison. The differences are not very huge, but Grey’s shoulders are slightly wider and he is a bit more chubby 
47’s tummy and chest are more, I don’t know how to describe it in english… Let’s say, both men are very muscular, but 47 is just muscles and Grey is muscles and burgers, and pancakes, and beer, and… 
But when it comes to Grey’s coat there is no difference. Maybe it just seems like it because as you see above, Grey’s posture seems not as upright as 47’s.
That was so much fun 