For the 3200 ISO, The ISO between the two, side by side on my computer screen, looks very similar. The Fuji images have som weird compression the noise in the background has artifacts. I am not sure if this is because of the way you saved them or what, but it is quite disgusting.
That being said, the 7D CLEARLY captures more detail and color in the denim pants behind the tripod. The thread is yellow on the 7D, and WHITE on the fuji, not to mention it kind sof disappears in the fabric.
The 7D took a more detailed, color accurate image.
In the 6400 ISO, same thing, no artifacts here though. But as I states earlier, the 7D pulled more detail out of the fabric, as well as maintained color accuracy. While the COLOR of the noise is more attractive on the Fuji on the 6400, the intensity of it seems worse to me.





