We always called it Nintendo and Super Nintendo. I never even realized it actually said "Entertainment System" on the console until I was about 13. Often times to clarify I will say Regular Nintendo. Now that I see NES and SNES, I've started saying Ness and Sness because I'm a firm believer in pronouncing all acronyms that can possibly be pronounced, regardless of whether or not they should be; for example at school I pronounce NJROTC (injhrotck), FBLA (fuhbla), ITGS (itgus), etc.

anyway, back to the Nezz pronunciation, does it actually make a "z" sound, like in buzz or Rizzuto? If so, I'd have to ask if these people come from households that speak only English?