As you likely know, GnG is not a forgiving series, and I'd wager the NES version is one of the hardest out there. I can handle Genesis Ghouls 'n Ghosts, and hold my own in Super GnG, but hoo boy the NES one really whips me. And so... if you can beat the 3DS one, I'll send the first person who can post visual evidence these awesome Capcom shotglasses!
Here's the deal - take a picture of you and the 3DS with the ending screen clearly visible. Now, I mean the real ending, from the second playthrough! First person to post that image in the comments below, gets the shotglasses! (NA only, postage and rules etc :/)
You have from now until Halloween to save Princess Prin Prin!