If you will humor a long-time lurker/never-poster, there are a few points I would like to make.
In stars/moons, right now, we currently have (in no particular order)
-3 runs of super mario 64 (+ a published rom hack, with another on the wings)
-3 runs of super smash bros.
-5 runs of super metroid (+ rom hacks I didn't count)
-5 runs of castlevania aria of sorrow
-5 runs of castlevania harmony of dissonance
-8 super mario bros. runs and rom hacks
-8 super mario bros. 3 runs and rom hacks
-heaven only knows how many other variations of other games.
So for those of us worried about potential bloat? I'd say that ship has sailed. If it isn't an issue now, it's not likely to become one. Doubly so with PAL, which has been noted as being only rarely faster.
Regarding the rules the good feos posted, it noted PAL was "...generally not allowed, unless there are significant technical and/or entertainment merits..." Personally, I call an 18 frame improvement on a run that has had every sub-pixel poured over - for 7 years - significant enough.
Super Mario Bros. is one of the most important parts of our gaming history. Further, we allow so many runs of the same game because they are, in their own ways, different and fun to watch. The nostalgia also helps. This run is clearly fast, entertaining (except the music), and of excellent quality.