No, he’s right. A normal or even semi-expensive capture card/TV-Tuner won’t give you pixel perfect shots. No matter what cables (S-Video, scart/AV cable, etc), add-ons (VGA box, etc) or programs (WinDVD, etc) you use, the shots they produce won’t come even CLOSE to what comes straight out from the game itself.
Even some Photoshop editing (resize, sharpen, etc), it will probably still need some major cleaning and editing.
I’ve heard that there are some capture cards that can take pixel perfect shots, but they run close from $3,000 ot $8,000, with them needing an s-load of power and fans/cooling systems.