Something I wanted to do for a while. I adore japanese dub and wish that more people were familiar with it. This comparison wasn't made to offend english dub or anyone who likes it.
Correct translation from japanese scripts (Cutscenes, dialogues, etc.):    • Playlist  
Upd. Unfortunately this channel was deleted due to copyright claims!:( You can still find some reuploads on Youtube by searching Japanese cutscenes with subtitles.
Clips used in this were borrowed from these channels: Windii Gitlord, TheRealSonicFan, Sonic Overtime, BlazetheCat130, Gamer's Little Playground, InbetweenGamer
Retranslated mods:
Sonic Adventure DX - https://gamebanana.com/gamefiles/6536
Sonic Adventure 2 - https://gamebanana.com/gamefiles/7122
0:00 - Intro
0:13 - Sonic Adventure
3:58 - Sonic Adventure 2
11:08 - Sonic the Hedgehog 2006
14:59 - Sonic Unleashed/World Adventure
17:34 - Sonic Colors
21:05 - Sonic Lost World
25:14 - Outro