A:Answer You are asking a question that most cannot answer because what percentage of the population would own a 77-inch OLED and a 75-inch Nano? Likely zero.
That being said, I own this tv for now (it's being returned because of its poor black levels) and can tell you that the video processor is top notch. Watching my DVRd Super Bowl between New Orleans and Indy was spectacular. Comparing to my Panasonic VT60 plasma, it was a huge upgrade because of brightness. Motion lag is non-existent and I saw zero dirty screen effect even watching hockey (which overwhelmed my previous 2019 Vizio G1 to the point I needed to return it, too).
OLED is compared much more to plasma than LED/LCD in terms of picture quality so if an OLED has better peak brightness than a plasma (whose claim to fame was always deep, dark blacks and NOT brightness) then I'd say it should be very good for sports. My guess is just like plasma, OLED is not produced for sports but for the home theater experience in a dark setting. So peak brightness will not match this Nano television.
But caveat emptor. If you plan on watching UHD blu-rays in a home theater type setting on this television then I cannot warn you strongly enough to avoid at all costs as blooming and light bleed are hideous.
PIck your poison.
