Why does the Nikon d7000 have a 0.94x magnification?

So I've been comparing the viewfinders of Nikon d7000 and Eos 7d, which happens to have the same 100% coverage and the same viewfinder size of 0.63x according to DPReview. But, the Eos 7d has a 1x magnification compared to d7000's 0.94x. If it has the same coverage and size, why does the magnification differ?

Added (1). What does you mean by increasing or decreasing image?

Magnification is how much the image is increased or decreased. Canon does neither, hence 1x. Nikon shrinks it a bit, hence 0.94x.