This article has a different viewing chart which is more aligned with what I've observed, but to each their own. You are correct about other factors being more important than resolution, such as refresh rate (not fake ones, like 120 hertz and the soap opera effect), black levels, etc. Unfortunately LCD televisions will never surpass the technology and viewing benefits of the now defunct plasmas. They have inherent problems with dark scenes and refresh speed due to the way they work. OLED, however, is a different beast altogether and may in fact be better than plasma, so there is some hope.
Why Ultra HD 4K TVs are still stupid
We used to have a best-in-class 50" Fujitsu plasma that was a 720p (this was around 2007), and compared to every other television, it was easily the best overall picture on the consumer market (until surpassed by another plasma, the Pioneer Elite Kuro.). Anyway, after being told it was "only" 720p, a lot of customers freaked out and went with a lesser 1080p set, since they suddenly swore they could tell the difference, even though they absolutely could not. The Fujitsu classed every other set in tests where viewers s weren't told the specs. The LCD makers started using incredibly marketing techniques to replace plasmas with a worse technology with better buzzwords and bigger numbers, more pixels, etc.