Nice Superman by Tony Marin too. At one time ink lines that were too delicate would be discouraged as they wouldn't print well, but the quality of printing is technically so much better now, although actually in the 'golden age' they had some gorgeous covers for comics and insides could be high quality too until the drive for cheaper and lighter newsprint stocks stared in the early '50s.
I was watching a PBS show yesterday and thinking about how comic artists are craftsmen, at least the ones I liked the most. Can you see a craftsmanship approach to say a Gil Kane or Joe Kubert comic book? I'm sort of shy about declaring things capital A art (or literature), but there's nothing wrong with craftsmanship. It could go back to William Morris and the Arts & Crafts movement which saw care as 'soul' going into something. There is a satisfaction to his 'meaningful work'. Now his wallpapers and books are in museums often alongside his capital A artist Pre-Raphaelite brothers works.