The RAW vs JPEG debate

Please put this RAW vs. JPG debate in perspective. I think RAW starts losing its benefits when noise starts to become a factor. I get more from my RAW files under ISO 800 but anything 1600 or over, noise starts to become an issue. Then, if I apply NR even in LR4, I lose details.

This could be my error or lack of proper LR4 knowledge but can someone please post ISO 1600+ in low lighting to show us how RAW is better than jpg?

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Nick P