Both TVs share a strong display foundation: 4K (3840 x 2160) resolution, 10-bit color depth, 1070 million colors, a 144Hz refresh rate, and identical 178° viewing angles in both directions. In practice, this means neither has an edge in raw sharpness potential, color volume, motion handling, or off-axis viewing — those bases are covered equally well on both panels.
The meaningful differences emerge in the details. The LG 86QNED9MAUA offers a significantly larger 86.4″ screen, but its 51 ppi pixel density is lower than the Philips 75MLED950/12's 59 ppi — a direct consequence of spreading the same pixel count across more inches. At typical living-room viewing distances this gap is unlikely to be visible, but up close the Philips will appear slightly sharper. More importantly, the Philips panel is classified as QLED in addition to Mini-LED, indicating a quantum-dot color filter layer that the LG lacks, which generally translates to wider color gamut coverage and higher peak brightness potential. The Philips also supports HDR10+ (dynamic metadata HDR), while the LG does not — giving Philips an advantage with HDR10+ mastered content by allowing scene-by-scene tone mapping. On the sync side, the Philips adds AMD FreeSync Premium on top of standard FreeSync, which enforces a minimum 120Hz low-framerate compensation — a meaningful perk for gamers.
Overall, the Philips 75MLED950/12 holds a clear technical edge in display quality metrics: QLED color technology, HDR10+ support, higher pixel density, and a superior FreeSync tier. The LG 86QNED9MAUA's only counterargument is raw screen size — 11 extra inches is substantial for immersive viewing in a large room. The decision ultimately hinges on whether sheer size or panel feature depth matters more to the buyer.