Effusive review overall, but he does spot one additional area where the new Mini offers less than the iPad Air:
The iPad mini with Retina Display has the same color gamut as the
standard iPad mini, which is narrower than the iPad Air and less
than the sRGB coverage we normally look for. The biggest issue
here is that there are other smaller tablets in this price range
that do offer sRGB coverage (e.g. Nexus 7, Kindle Fire HDX 8.9).