First off, everyone writes the Wikipedia. See that Edit tab over every section?
Secondly, I'm sorry, Black Mage. I know I can't argue with you, after all you ARE Black Mage. I didn't know about the MP system change. I knew about Erdrick and Link (such brave warriors, we'll miss you) and ineffective. Ineffective was actually a change made from FFI to FFII, right? The remakes had the change (not in the Hard mode of the PSX version?) to go along with it. I knew about the spell name changes to make the text less basic. So in short, I do believe you.
The GBA version should've had hard/easy to include ineffective and please oldbie (opposite of newbie) fans.