I don't think any of NSMB's detractors actually remember a damn thing about the game. How can you not be impressed with the level designs in
this video, for example? The hazards and obstacles that you have to overcome to clear all of the levels and collect all of the star coins are extremely varied and often times clever and inventive. The only bad thing you can say about the difficulty is that they were a bit too generous in handing out power ups, but the actual platforming challenges were generally more difficult than those seen at similar points in NSMB Wii, and the secret coins and level exits were generally more difficult to find, and unlike NSMB Wii you don't have any fly-over-the-level-instant-win powerups. NSMB Wii had a lot going for it too with clever level designs and platforming gimmicks, but overall, NSMB DS was more challenging and was arguably the better game.