I'm stumped! But don't go out to buy new RAM just yet. Try running it with just 1 stick, and then the other first, and see what freq. they run at. Dual channel has nothing to do with the RAM not running at 200MHz. My RAM is running in single channel mode at the full 200 for instance.
One funny thing in your report is the FSB
RAM line. It reads CPU/14. Which means, if you do the math, that the 157MHz is correct (2200/14 = 157) It just seems you have got to have a RAM divider running somewhere. Check for something in your BIOS that says "RAM Freq 100%" or 66% or 80% or something. The divider won't nescessarily look like a Fraction in your BIOS, could be a percentage thing as well.