No, puffin, actually NCE 92 or 93 is always going to be 98th %ile, in a normally-distributed population. It isn't a peculiarity of this specific norm group. There will be some oddities comparing NCE to %ile if the data set is not normally-distributed, though.

Although I agree that %iles can be misleading, especially in a tightly-bunched group with outliers. Just like medians. It's just rank-ordering.

...pronounced like the long vowel and first letter of the alphabet...