Originally Posted by Kopsis

More accurate? Nope.
Knowing exactly how far out of true you are doesn't do a thing for fixing it.
Accuracy is all about having the skill/patience to make the adjustments it takes to get the wheel true and no amount of measurement is going to help with that.
Which also begs the question of "how accurate do you have to be?"
What's the real advantage of getting under 0.2 mm lateral trueness (which is easily seen/heard with feelers)?
Competition may drive commercial builders to be better than actually necessary, but that doesn't mean the wheels are actually any better.