Huh, Cavil looks more dense based on circumstance(hair/pose). Evans was walking around with huge arms for months and he's naturally a gym head(it's been documented). They wanted to give him a sort of artificial/fresh look based on the story premise.
That being said if snyder hired the guys from 300 then you can bet Cavills working with some very practical muscle fibers. I do think Jackman get's over looked for how easy he makes it all look but he get's in insane shape for his films.
Hemsworth has the best frame for what he's going for and Reynolds kicked ass in his bulk up films as well.
Routh imo is really the only one that looked like he had water in his arms(sorry man)
At the end of the day, this guy probably has the has the best transformation(flash thompson).
no homo