They share style. Both men wear summer odd jackets, shirts and leather shoes. Both use blue, white and brown. Both sport a beard.
In spite of that results differ significantly.
The man in the upper photo follows tradition. Neither cut nor patterns stand out, although shoes, the folded shirt cuffs and jacket shoulders mark a subtle dandification.
In comparison the man in the lower photo is a sans-culotte, a revolutionary. The cut of jacket and trousers breaks with tradition. Patterns are unruly. Evidently, the man knows classic style but he has substituted it with drama and romance.
Source: The Journal of Style in Florence
I disagree. He doesn’t look like a revolutionary, he looks like a slob. What’s stylish about wearing clothes that don’t fit properly? As for the man in the upper photo, I keep looking at his right shoulder. It just seem off or something.