Board Thread:Speculation, Theories, and Rumors/@comment-25400375-20150315043543/@comment-679780-20150319234617

Observer Supreme wrote: Well, it was a DS game that was released first in North America. They probably didn't have enough time, money, or room to fit all that. True, plus some handheld games are not often considered "canon" to main games and the fact that the game is set somewhen in the future, while not far future, still doesn't mean it's all that canon.

So if Sega wanted to, they can remake a more ideal version of Sonic Chronicles and can call it "canon" if they want too.