Not sure you can trust any comparison setup by a manufacterer.
Ive seen a LG 960 OLED, next to a JS9500 and both have been calibrated and theres no comparison.
Sure some LCD/LED TVs can go really bright but only on a small portion of the screen and then you start to lose the black to grey gradient anyway.
Plus Samsung fail to mention its peak brightness is only on 10% of the screen, i think the Panny OLED is 30% and other JS models get beat convincingly for brightness by much lesser cheaper models, like the X8505C and CX700B.
Obviously Samsung arent going to say negatives about their own products, but they arent the all singing all dancing products they think they are.
Plus the one connect boxes really arent upgradeable either, total scam promising 4 years of support and giving 1.