I know a good number of people who are about 170 and 5’11” that aren’t scrawny in the least. Not bulky by any means, but not scrawny for sure. I will admit college wrestlers aren’t a good test group, but the point remains. A lot depends on body type even if you are the same height. Some people get bulky others just kind of gain weight.
And I doubt I would take them seriously as the premier Five Points bare knuckle badass. At least D.D. Lewis had the whole "master of knives" thing going for him.
I don’t think it’s DiCaprio’s body as much as it is his face.
He has a round, flat face, a pasty complexion and little, deep-set eyes. To look at his face you’d think he was a short, Pillsbury doughboy.