An odd, infamous cover has been on my list to share for a while.
Cover to All Good © 1949 St. John Publications, via The Grand Comics Database.
You might find more boastful titles than All Good (its actual name, according to the indicia) — up to and including World's Best Comics, which would seem to have had the last word; there is no Greatest Comics in the Universe as far as I'm aware. What you won't find is a cover that makes its case more plainly.
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