One handed spec is better than Reckoning because it is not situational and it increases ALL of your damage by 5%.
I'm not saying that you should avoid stamina to focus on those stats. It's just that as you get better and better gear, hit rating just starts getting included in the gear. Sure with gems you can determine what you want, but I can't take the hit rating out of gear and replace it with stamina.
AD is a move that like I said is situational. Your raid shouldn't have to depend on it to complete the raid. At best, AD will give you maybe one more hit before you are dead.
And I think it's pretty well understood that when we say the talent becomes useless we are referring to specific points at level 70 progression. For instance, I would never call Reckoning completely useless, it just becomes more and more useless as you gear up.