You couldn't be more wrong.
Galaxy on Fire 2 does it. You have to go and enable retina graphics in the settings.
You have no idea what you are talking about. The iPad is not "always running" all the pixels regardless of content. If something is not full res for the screen it is simply scaled up aka stretched to fit the screen. So, obviously, it doesn't require the the same amount of graphical power to output lower res graphics and stretch the picture to fit the screen than it does to output to full resolution on a 1:1 scale.
+1
thank you sir
finally someone with a brain.
maybe hes never switched his computer monitor to a lower resolution