That, and you can't really compare the two, as they are vastly different techs. ( all joking about NTSC aside! :P )
With the vintage set, there will always be variations, no two CRTs are exactly alike, nor is any chassis, even if of the same make mo#, change a tube, and it will act slightly different.
And with NTSC, there is the infamous TINT control,
https://en.wikipedia.org/wiki/Tint_control.
Always a source of fun to get JUST RIGHT!
But as things went over to flat/digital, these variations became almost, but not quite non existent between sets and other makes models of flat screen sets, a very keen discerning educated eye can still see differences, but to the average person, they look very much alike these days.