The firstborn of DC's and Marvel's superhumans go at it!
Round 1: Original Superman from Action Comics #1 in 1938 vs. Original Submariner from Motion Pictures Funnies Weekly #1 / Marvel Comics #1 in 1939. Only feats from those two stories allowed. Standard Rumbles Settings.
Round 2: same as Round 1, but on the Atlantic shore of Metropolis, with plenty of deep water and open air.
Round 3: Byrne Era (1986-1988) Clark, at his weakest since the Mid- Golden Age vs. the Namor of the same time period. Standard Rumbles settings.
Round 4: same as Round 3, but again at the Atlantic shore of Metropolis.
Round 5 Same as Round 4, except: Fight is at Atlantis.
Which Eldest Superhero wins each round?