<div id="linkdxomark">This a comment for <a href="http://www.dxomark.com/Cameras/Camera-Sensor-Database/Nikon/D610">this page on the website</a></div>Sports (Low-Light ISO)
D600 score is 2980 and the D610 score is 2925; i know the difference is negligable but why are they different?
All tests have limited margin of error, not a zero. High ISO score is especially susceptible because it is based on cut-off values for 3 different measurements - noise, DR, color depth. Some variation in measurement in just one parameter will lead to variation in high-ISO score.
Basically, I would not read to much in variation in scores within 20% even - because DR and color depth values are logarithmic, within 0.3 - just assume it is a measurement variation.