I have been riding (and still have) a Honda CRF250X and my TW200 rides much smoother than the Honda. I had both an XR400 and XR600 that rode rougher than the TW as well. Perhaps the XR650L has a really soft suspension, I've never ridden one of those. The big tires on the TW are part of the suspension. Air them down to 12 or 14 lbs when you are off road and you'll find it more comfortable.
Chip