Supplement Four said:
So, you're saying, that if you're playing the game about a group of 8-10th level characters, that you're OK with the notion that each of them are superheroes like Superman when compared to real people as long as the story is good.
Except that they aren't. Go look at a dedicated superhero game and compare _that_ to mid-level D20 power. How is a 9th level character _anything_ like Superman? They aren't immune to any damage, much less to energies, they can't roast things with beams from their eyes, and none of them can fly at will. Sure, in D&D some can use the Fly spell for a limited time.
Arcane casters in D&D are _really_ very powerful, no two ways about that. Wizards are also the single most powerful class in D&D by a long shot. And yes, any 9th level Wizard can rock out spells that would put characters like Gandalf or Merlin to shame. But as I said before, Gandalf and Merlin aren't D&D characters and don't live in D&D worlds, so the question what D&D class level they would have is entirely irrelevant.
But anyway: I don't care if a 9th-level character might be able to jump, say, 30 feet (seems attainable at that level). What can a level 9 Conan character do? He can't be flanked if he's the right class. Maybe he can throw people off their feet if you took the right feats. He can last a few "hits" in combat, but here we are at the old discussion what HP represent again. Oh, and he can shoot two arrows in 6 seconds, three if he is really into archery and doesn't aim too well. That's good, but it's not superhuman, and it sure is a long shot from the typical superhero powers.
So _please_ stop building a straw man. Level 8 isn't superhero, level 12 isn't and level 20 still isn't, either. Not in Conan where any lucky axe-blow can kill even a level 20 character.
What you are basically saying is that, if a character can swim in full plate (without the aid of some "belief" helper, like magic), then you're OK with it. You'll fit it into the story.
Not that Ichabod said anything like that, but well... here I agree that there is a _physical_ limit that would be violated by swimming in Full Plate. No matter how strong you are, your discplaced volume of water will always be less than your mass plus 25kg of armour so you must go under.
Luckily, a swim check in Full plate will be at least at -18 if you don't carry anything else, so it's gonna take a while before any character will even attempt to do that.
Whereas the human inability to jump 100' is not a physical, but a physiological limit. There is no reason why a creature couldn't jump 100' if it were just strong enough in relation to its body mass.
FWIW, D20 doesn't quite permit you to jump 100' anyway. It's impossible even at level 20 without magical boosters. (maybe Monks can do it, but that's wuxia again)
However, and just as an aside, those physical skills are largely irrelevant in a D&D game anyway, because of the available magic spells. You don't need to worry about jumping 100' or swimming in heavy armour when you can just use Dimension Door to teleport the entire party 700' or more (level 7); cast magic to breathe under water (level 5), turn your entire party to gaseous form so you can literally move like wind (level 11), or simply Greater Teleport your group to any place in the world (level 13).
By playing Conan D20, you have already culled out all of that, so the character actually have to get places through their own physical abilities. That's fine, but then at least give them the chance to do so. If the potential skill checks worry you so much, you can maybe cap them at 10 ranks or so.
By the way, another game system for the "realism" enthusiast is GURPS. From what I hear, it has been designed specifically to simulate the abilities and limits of real-world humans. Which already is enough reason for me not to play it. I am a real-world human all week, so I want to be able to pull off some awesome stunts at least when I play RPGs.
P.S.: there are in fact a few "Superhero" or "Demigod" games for D20 system: Mutants & Masterminds, or Exalted, most importantly.
A standard D&D game can be pimped towards Superheroes by using the Gestalt rules of Unearthed Arcana.