http://tech.sina.com.cn/digi/dc/2010-12-31/13225050741.shtml
(in Chinese, English Report Here (Google Translated))
The review tested RAW Vs JPEG per body, in-camera JPEG ISO comparison amongst the four bodies, RAW JPEG ISO comparison (from 80/100 up to 25,600), 30 second long-time exposure shootout, crop comparisons for other real-life samples, and finally resolution comparison (for both RAW and JPEG) and at last a sum-up for all the shootouts and for the whole test.
A very nicely done and objective test and report, I have to say. Highly recommended.