Did you check the Canon APS-C sensors performance difference?
DxOMark - Compare cameras side by side
WOW!!!! Canon has not yet broken the 70-point overall score mark!!! Nikon has broken that quite handily, as has Pentax. Both the low-light ISO ranking and the dynamic range ranking are pathetic compared to what the SONY-made sensor in the NIkon D7000 and the Pentax K-5 are capable of. But, seriously KmH, in all fairness to Canon, they have been very,very busy with the photocopier division, and the video camera and lens divisions, and have also been VERY, very busy hyping the megapixel race and in producing all those print and television advertisements. I mean, with all those distractions, there's so,so little time left over for actually improving the performance of the cameras...I mean...there's only 24 hours in a day, and Canon has to make sure the photocopiers, video cameras, cine lenses, and all those other ancillary things get proper care.