On a larger scale weight is always better, on a smaller scale measurement is fine.
If off a few degrees with a compass, at a few meters you will still hit your mark, at several thousand meters you will be lost.
If sights are off on a rifle, at a few meters you will hit the target, at a few hundred meters you will miss by far.
I measure 1 tsp table sugar for a 22 oz bottle, slightly rounded, level, tad under, bottle will still be carbed fine.
If I measure for the whole batch (24 bottles), that little over or under each time has a cumulative effect,
and will be way over or under.
If I bake on a very small scale measuring is fine, or even eyeball it, on a larger scale I switch to weighing.
Learned this the hard way.