I do not feel that Sub-Mariner was a better hero than Aquaman. The current incarnation of Aquaman (as depicted in the recent film) is a lot of fun. Ridiculous, but fun. As a kid reading Marvel comics, Sub-Mariner always struck me as Spock in a Speedo, which I did not find compelling.
Note from Missy: “Spock in a Speedo” sounds like an British dish. What would you like to eat? Toad in the Hole, Bubble and Squeak, Spock in a Speedo?