Nope, no delay at all. The game controls and plays exactly as it does on all the other systems. As I said, I compared it side by side to the PC version. Even performed some jumping, walking, and running while pressing both systems' buttons at the same time (in the same level and same positions even). Rayman reacted exactly the same in both. He'd jump exactly when I pushed the button in either version, and his airtime and time between jumping and landing were identical in either version. So whatever issues you'd have with the 3DS version are present in all the others as well.I have to ask you, did you really not notice any delay at all when platforming?
Sure Rayman Origins is known for having bad controls and physics but I played it on PC and felt that my jumps were much tighter than on the 3DS, and I play a lot of platformers on my 3DS so it's not the system itself.
About the compression, it could just be an older demo not released until now. But it's probably thanks to the lazy devs.
Look at the top left corner where the Rayman head is, the quality is just awful. It's like if they took the Icon and converted the image format twenty times before putting in the demo.
And yes, the image quality is very poor. It was expected to look lower resolution, but this looks like it's running at an even lower resolution than the 3DS' screen. The entire thing looks blurry and somewhat dark. There's something else going on inside the game that isn't the fault of the 3DS' screen resolution. You can see how low resolution the assets are even during the parts where the game zooms in to the screen (so you can tell it's not just because the view is zoomed way out).
By the way, someone mentioned above that the framerate was worse than MGS3D. It's definitely not. Origins 3DS is running at half the framerate of the others, 30fps. But it stays there and doesn't seem to drop any from that rate. MGS3D literally hovered somewhere around 20-25fps during gameplay and dropped well into the teens and sometimes even single digits during stressful cutscenes. Rayman is nowhere near that bad. The worst thing about the framerate is simply that it's not as good as the other versions. That's bad (especially considering I see no reason why the 3DS can't handle 60fps in a game like this), but not MGS3D bad.