Tinker, please go look up the definition of Dual. Dual means TWO. Of or pertaining to. Nothing more, nothing less.
Here, I'll make this easier for you.
http://dictionary.reference.com/browse/dual
I EVEN understood it that it was able to operate on TWO bands. However, I also understood that it wasn't simultaneous.
I have my box right in front of me, and it mentions this:
"Duo Technology - Your router has the power of dualband (2.4 GHz or 5 GHz) wireless signals to get your game on in the band of your choice."
I'll SPELL this out for you even...KEYWORD: OR
Or does NOT mean simultaneous, or TWO at once. It's one choice.
If you can't get that, then you must be dumb.
Your claim is invalid.