I have three things to tell you:
2. There were no rippling abs before Charles Atlas’s exercise regimen in the early 20th century. No 19th century, cattle-herding Scotsman ever looked like this. (He was too busy subsistence farming to spend an hour every day doing sit-ups.)
To the right, however, we see a real Scottish man. Doctor Gordon Smith performed amputations on an ironing board in a notorious Japanese POW camp in Burma, all while suffering from malaria, a gunshot wound in his arm, and starvation rations. After the War, he spent time in Germany dismantling bombs.
3. Too many cover artists (and probably some writers) don’t know what medieval clothing looks like.