Non-dual wielders (ie hunters, paladins, 2h dknights, 2h enh shammies, 2h (1 weapon only) warriors have the lowest chance to miss (9% base vs a +3 target).
Spellcasters have a higher base miss chance (I think around 15%, not sure since I don't play any offensive casters)
Dual-wielders have the highest miss chance, base 24% miss.


Maybe this is where you're getting confused. You need less hit rating on a non-dual-wielder melee (or hunter) to achieve zero-miss rate. Without being hit-capped you have far less chance of missing than a caster or a dual-wielder.

Try playing a rogue without any hit rating and you'll see how bad it is...

Right now it's impossible with the gear in-game for a rogue to even reach the hit cap. At least non-dual wielders, hunters, and casters can obtain enough +hit to reach hit cap. Rogues, DW dknights and warriors need something like 600 hit rating to be hit-capped and that's impossible to reach right now.