ISO Measurbation: Q Vs K-r Vs K-x Vs K-m (Full Size Originals)

New Q ISO test:-http://www.flickr.com/photos/11899953@N02/sets/72157627629309900/By Devorama, on the same target and under the same lighting condition as the previous ISO tests of his on the K-r, K-x and the K-m. And yes, this guy seems to be a die-hard Pentax supporter, he bought every Pentax new (entry) model at the very first time (and actually I also bought the K-r, K-x and K-m, but not (yet?