This 1978 Industry magazine shows the best selling toys at the time, not surprisingly Kenner's Star Wars is number one with a bullet. The chart also shows Mego Micronauts as no slouch at number 10. The
World's Greatest Superheroes although not TV advertised and not adding any original product that year are still at number eight. Note that the article mentions the steady sales of Remco's Energized Spider-man, a toy that pirated sales from Mego.