I told you before
what happened when the Avengers met the Justice League of America here and here.
Eventually everyone realized you’d reallyonly need one hero, Superman, to
defeat the Avengers provided, of course, that the Hulk is otherwise
occupied-this was when the Hulk had time traveled to WW II and fought the
Invaders! Add the motivation of Superman being mind controlled by Darkseid,
considered by many to be the ultimate DC Comics supervillain, and you have an
unbeatable scenario. So again, Marvel “rented” two DC characters; "Menace from Earth-D" referred to DC Comics and/or Darkseid! They got Jack
Kirby, famed for his covers, to draw this one. It sold so well it led to other
crossovers including this one and this one. The crossovers continue to this
day. 'Nuff said!
