How accurate is Auto Exposure in Tv-mode @ ISO 200

Neutral settings (contrast, sharpness, saturation), WB = Auto, RAW-files, Multi-Segment Metering.

All images RAW-converted in Adobe Lightroom w. neutral setting (no editing at all)

Lens: SMC-F Pentax 4-5.6/35-80mm (I happen to own two of these)

To my surprise, it seems that the K10D does a better job dealing with great contrast.