I don't figure high scores to really be an accomplishment. I mostly like them if they are added to the board for completing a game, but if that's the whole point of the game like Wario Land, Luigi's Mansion, or Pikmin, I hate to say it, but the lack of closure leaves me empty. It works way better for those 3D Classics on the 3DS like Kid Icarus, Kirby's Adventure, and Twinbee.
Pac-Man or Tetris, sure because those games are meant to be short and sweet, but if someone else also played it, I'm not going to compete. I would rather just stick to personal bests.