As part of a shootout it went up against the iPhone 6 Plus and four tablets, including the Super AMOLED-packing Galaxy Tab S and the iPad Air 2.
Display Mate used the iPhone 6 Plus instead of the smaller iPhone 6 because the two screens perform similarly.
The Samsung Galaxy Note 4 won the Full Gamut and White Point color accuracy tests while set on the Basic display mode.
Display Mate's earlier tests show the Photo Pro mode performs similarly.
Interestingly, the Apple screens did quite well in Skin Tone and Organic Color accuracy tests – the iPad Air 2 is second, while the iPhone 6 Plus places third.
It seems that Apple optimized for natural images, but in terms of Full Gamut and White Point accuracy both devices did quite poorly.
Of course, Display Mate could have picked a more representative sample of devices to compete with the Galaxy Note 4 and iPhone 6 Plus, but still.
For tablets, Samsung's large Super AMOLED does great too – it comes in second for Full Color and White Point accuracy, but it's third for Skin Tone and Organic Colors.
The Microsoft Surface Pro 3 slots in behind it with a slightly worse White Point accuracy.