Now the first thing I notice is that there seems to be little difference. Here is an interesting development. The 7D raw file has the sharpness setting to use the sharpness method (the original method in DPP I believe). The 7D2 raw says to use the Unsharp Mask option instead by default. Here is what the difference is on the 7D2 ISO 3200 shot using one sharpening method vs the other. When I did the earlier comparisons, I left the respective raw settings alone for sharpening, this time around I made them equal.
Here is what ISO 3200 looks like from the 7D2 and 7D using the 2 methods of DPP sharpening. Interesting differences... The upper left and lower right are the Canon raw default settings for sharpening. The 7D2 can use either sharpening method, but the non-USM option enhances the noise, almost negating the 2/3 stop difference, the 7D cannot use the USM method, it ruins the image almost completely.
The moral of this story is to always use the USM method for the 7D2 raw image if you use DPP, because if you use the Sharpen method instead, you will get a crisper but more noisy image. Clean up the noise first, sharpen later, I always say.