IPod Touch 5th generation screen much brighter than iPhone 5 sceen?

My brother and I both have iPod Touch 5 Gens. The first thing I noticed about my iPhone 5 when I got it in January is that the screen is not as bright as the iPod screens. This is with auto-dimming off and brightness at max on all devices. It's very noticeable when they are compared side-to-side. White areas appear more grey on my iPhone 5 than on the iPod. The icons even appear crisper and sharper on both iPods than it does on my iPhone. I don't see a yellow tint as has been reported before, but the brightness is definitely noticeable.

is this common or do I have a faulty iPhone 5?

I know there's a SLIGHT color difference in the iPhone5 but if it is THAT noticeable then call apple and ask for a replacement or something (or just ask them about the screen).