Board Thread:Sonic News Channel/@comment-24560510-20140217220116/@comment-477304-20140812210836

Numerous reason as to why the LSD gets a lower rating: Sonic would then have to move faster than the speed limits in the game, which would present all kinds of issue when trying to use the move, another reason could be that it can be used to exploit the ranking system in the game to get a massive amounts of points.

That sounds more like a promotion than an actual statement on Sonic's speed.

Sonic is cocky, it makes sense that he would exaggerate his speed and Shadow teleports when he uses Chaos Control, it's not a case of moving fast, so that's irrelevant. Sonic isn't always serious about speed whenever he says something like that, it's in the presence of friends, so I think it's pretty clear he's just being cocky and arrogant.