I see where I have confused the issue, yes the latter is correct. I should have said that to correctly measure an amount using a regular spoon, one should ensure it is slightly rounded to ensure it is the same capacity as used by a measuring spoon.
This also opens up a can of worms on the 'what is a spoon measure' as I have always considered as teaspoon is 6ml not 5ml. But for the sake of this topic, i'll leave it there.