I don't consider Ninja Spirit that hard. Once you have a few powerups, you are so powerful...
But, I've played the game to death. On PCE mode.
That doesn't mean I don't get my butt handed to me in other games, though. Like R-Type. I still get smacked around by R-Type.
100% agree. Once I'm powered up on Ninja Spirit I typically don't have that many issues playing through it with relative ease.
And I am definitely "one of those" that falls through that magical, magical space on the left side of the screen during the ninja pitfall sequence.
And stupid, stupid, stupid R-Type. . . If I don't beat it by the time I've reached middle-age then I am setting all of my OBEY ablaze and dancing around the sweet, sweet flames like a crazy person.