Board Thread:Speculation, Theories, and Rumors./@comment-6362372-20131024111232/@comment-477304-20131211145456

Bart is still 10 in the Simpsons, even though that series has been going on for over 20 years. Also Tails has still been shown to depend on Sonic at times. Tails' personality drastically changed in Lost World, which I would account for a writer who isn't as familiar with the Sonic series.