I agree with you completely. it would be VERY close imo.
But there are those that would disagree because the NTSC monitors
operate in a different color space than HD. I’ve heard the phosphors
in the tube are different as well.
perhaps somebody with real world experience in both could comment.
I do color grading on my sony lcd at home, but I have it calibrated
(by my eye) The interesting thing is, what I see on my LCD is what
I see on my television when doing DVD previews. So its “good enough”
for me.