I find it interesting that much of the time when Conan faces seriously magical opposition, he survives it and conquers by virtue of the magic items he has in that adventure (the phoenix on the sword, the black seers of yimsha) in addition to his guts and strength.
Which is pretty much the way that high level D&D fighters have to overcome such foes too.
D&D is a game where magic items are not just important, they are vital. High level fighter types in games of OD&D, AD&D I used to play would have a variety of magic items which helped them in all manner of situations, and enabled them to play 'jack of all trades' just as much as the wizards. Of course, this was before 3e decided how much magic people 'should' have, and introduced a 'big n' magic items which sucked up the level-appropriate magic, but I digress
Cheers