I agree that Hulk and Thor should be stronger and Namor should still be able to give them a run for their money due to having unique abilities, but over the years it seems it's far less unpredictable when these characters meet. No one these days really is expecting Namor to come out on top if facing Thor or Hulk. It SHLOUD be a real slugfest, anyone can win, type of encounter, but it doesnt feel that way in the modern age.