This is just not correct.
You are backing up your statement with personal experiences and raidbots. The problem here is, that raidbots' data are from raiders that are at T14H gear level or slightly above. And your personal experiences.. well.. don't get me wrong, but they don't really count.
Simc clearly says, that Affliction is going to outperform the other 2 specs once you get closer to your BiS gear (I'm pretty sure the 30% haste legendary meta will be a significant milestone on that path).
And this is only single target dps. Affliction is already outperforming destruction in some multi target fights.