For comparison, the previous minis had a 62% Color Gamut with poor color saturation and a very high screen reflectance. The iPad mini 3 had 6.5% reflectance and the original iPad mini had 9.0% reflectance.
The previous record holder for low Reflectance was the iPad Air 2 with 2.5%, but most of the Tablets that we have tested recently fall in the range of 5.0% to 6.5% screen Reflectance (including the mini 3). So the iPad mini 4 has a Contrast in ambient light that is a factor of 2.5X to 3.2X higher than most other tablets (and 36% better than the iPad Air 2) - a major display performance improvement in real world viewing conditions! In fact, the iPad mini 4 has a Contrast Rating for High Ambient Light of 225, the highest we have ever measured and another record for the mini 4.
Other lab measurements for the iPad mini4 included a high Luminance of 449 nits and a Contrast Ratio of 955 (in 0 lux absolute darkness).
More details to follow in the company's display shootout with the iPad Pro. Please follow iClarified on Twitter, Facebook, Google+, or RSS for updates.