In complete honesty, I don't think Little Mac's Speed should be that high, unless this is considered to be for both attack speed and movement. In terms of movement, he should be a bit lower, although not by much - depsite his poor air game, his fall speed is great and his horizontal air speed is pretty average. Perhaps reduce it to 9/10, because he's far from being the fastest character overall.
Honestly I considered a 9 and probably will change this.
Characters who will probably have a 10
Characters that should probably have a 9
Mii Brawler: 14.75
The only reason I put Mac as a 10 is because he generally doesn't go into the air.