Also think #1 captures the dual concepts better. He looks capable and it is the situation that is challenging, but he is actually doing the task, that gives more hope. #4 looks like he is trying, but doesn't show enough strength as the figure #1 with plenty of muscles.
People who research their individual concerns are more able to improve them. It builds muscles so to speak and can result in success. Too bad in the myth there were so many negative aspects to the whole story. But from the picture alone, showing the man with well developed muscles shows he is not only putting in the effort, but looks capable. Everyone needs a positive outlook to work hard.