Both the Hisense 55QD7QF and the TCL 98QM6K share the same display technology stack — QLED Mini-LED LCD — and identical native resolution of 3840 x 2160 px (4K UHD), along with full HDR support across all major formats (HDR10, HDR10+, Dolby Vision, and HLG). Their panel characteristics — 10-bit color depth, 1.07 billion colors, and 178° viewing angles in both directions — are essentially equivalent on paper.
Where the two diverge significantly is in screen size and refresh rate. The TCL's 97.5″ panel nearly doubles the Hisense's 54.6″, which has a profound impact on pixel density: the Hisense delivers 81 ppi versus the TCL's 45 ppi. In practice, this means the Hisense produces a noticeably sharper image at typical viewing distances, while the TCL's lower pixel density is more of a non-issue when viewed from the greater distances that a near-100″ screen naturally demands. Meanwhile, the TCL's 144Hz refresh rate is a major advantage over the Hisense's 60Hz panel — smoother motion in fast-action content, sports, and gaming is a tangible, everyday benefit. The TCL also extends its adaptive sync support to include AMD FreeSync Premium Pro, adding low-framerate compensation and HDR support in variable refresh rate scenarios, giving it a clear edge for gamers.
In summary, each TV has a distinct advantage in its own right. The Hisense 55QD7QF wins on pixel sharpness for its size and is the more practical choice for typical room sizes. The TCL 98QM6K holds a clear edge in motion fluidity and gaming performance thanks to its 144Hz panel and expanded FreeSync support — and its cinematic screen size is unmatched if the viewing environment can accommodate it.