Talk:Knuckles the Echidna vs Natsu Dragneel/@comment-26184007-20191204103132/@comment-39775068-20200123192052

But that's a much earlier episode. Look at the later Death Battles. They actually tried to calculate Sonic's actual casual speed. Most likely 9000+ miles per hour is Sonic's casual running speed. What I'm assuming is that Sonic is holding back at this speed to protect the people (of the stages he's running through, because there's visible bystanders within the stage itself) from what would happen should he go all out at full speed. If Sonic's "casual" speed was actually 765mph, then the Sonic Unleashed speed calculation mechanic would show much lower readings.

I tend to not take info from the older Death Battles, mostly because the team was inexperienced at the time and there was a distinct lack of calculations made compared to now. The first time they actually had a go at discerning Sonic's speed was in Metal Sonic vs Zero, if I'm not mistaken.