They do this on Vita all the time, they are HD versions downscaled for said platform. I guess what they are saying is indeed false but nobody has ever really complained all that much, mostly 3DS fans saying Vita isnt HD.
edit: please dont reply to me with fanboy wars bullshit, thats not what this thread is for
I've seen people say things along the lines of "it's better than 480 but not quite 720" when talking about the vita screen. The best thing I can find on the resolution of the 3DS screen is from the Nintendo site:
On the Nintendo 3DS XL, a widescreen display on the top screen shows800x240 pixel resolution, allocating 400 pixels for each eye to create the 3D effect. The bottom LCD touch screen operates at a resolution of320x240—with both screens capable of displaying a brilliant 16.77 million colors.
Based on that I gotta think they aren't using the same standards for resolution as the TV world, otherwise the 3DS is half as good as a standard def tv? I get that the screen is small, but even then, come on now. And then, if that is true, to call something HD?