Focus and contrast locked and played on the same tv with the same game. I don't have capture devices so I recorded with my iPod 5th from a tripod. Edited a split screen.
Short answer: They are identical. But I already knew that.

http://youtube.com/watch?v=B9Tr-S0XewE
For reasons unknown, I still prefer playing gamecube games on my actual gamecube. It just feels right I guess.