Sega Announces new 2D Sonic title

[Rökkan]

rokkan
note that technically tails is older in the newer games, so obviously his proportions would be different and less childlike.

This can be an argument about the longer arms and legs, but not about everything else. Sonic the Hedgehog was always 16 years old and his torso was spherical back then. Plus Sonic's arms and legs are bigger in Adventure even though he is still of the same age, so that added to the fact that the characters' ages are unstable in the series (some games portray Tails as 12, other as 8, other as 9, etc) and never mattered two shits anyway, the longer arms and legs are more of a stylish choice and less about the character aging itself.