This is a little bit weird. Now, I am developing an app that's universal. However, I don't provide images for the iPad retina (iPad 3 and 4), but still retina images available for the iPhone. Now, the app uses the retina images of iPhone on iPad 3 and 4 instead of using the non retina, yet with correct size, iPad images.
To clear this out: - iPad 1 and 2 uses the iPad non retina images (normal). - iPad 3 & 4 uses the iPhone retina images instead of the iPad non retina images!
I tried a solution where I renamed the iPhone retina images so that it will end with ~iphone@2x. This fixes the issue on the iPad 3 and 4 but now the iPhone 4, 4s & 5 uses the non retina images!
IIRC, you got it the other way around. It should be myimage@2x~iphone.png.