Redguards have +10 one-handed, +5 block, destruction, alteration, archery, and smithing. They can fight sword/shield, sword/sword, spell/sword, spell/shield, spell/spell. Their main handicap is their lack of armor skill, even there are some alteration armor spells. Nords, on the other hand, have less attack types, but have better armor. Their +5 one-handed/block is kind of useless, though, because for me its always use a warhammer or dont be a nord. So yeah, Redguards are superior.