Both have their merits, plusses and minuses. I look at it as multiple great ways to customize a hearty piece of equipment and, with WODE coming out soon in addition to that SunD2 (or whatever it's called), there are even more options on the way.
That said, NSMB has been fixed for softmod and hardmod users for a bit of time now. Have a look at davepm's guide here: http://www.wiihacks.com/wii-games/28...ario-bros.html
Addendum: In fact, as I remember now (and anyone feel free to correct me if I'm wrong) hardmod users were actually the first ones to benefit from playing NSMB via burned disc in those first couple days that the game got out there. It wasn't until a couple days later that the hex-edit fix came around for us softmod users. So I think there may yet be some light in the darkness for the modchip crews.