Actually a lot more goes into noise performance imo. This may measure the amount of noise present in the photos the 2 cameras take, but do not account for the pattern of noise created and what kind of noise, how the noise looks etc. A camera may produce photos of lower noise values, but if the noise appears blotchy and all that, it's still not good to look at. Test charts don't really say much imo, I would look at real pictures.
Other than that, the results are not surprising, since Canon already released 500D and 550D after 450D, so it is not really fair to compare the two since the tech is so different. Like the others suggested, a comparison between the 60D and more recent cameras like 550D or 7D might be more appropriate.
Other than that, the results are not surprising, since Canon already released 500D and 550D after 450D, so it is not really fair to compare the two since the tech is so different. Like the others suggested, a comparison between the 60D and more recent cameras like 550D or 7D might be more appropriate.