>>105133622Because Super Sonic wasn't explained when he was originally introduced in Sonic 2. Fleetway had to give him some kind of story reasons and Sonic 3&K hadn't been made yet to give him that characterization.
Fleetway just saw that Sonic got incredible power when he interacted with CHAOS emeralds and ran with it. So in their version. Chaos Emeralds were made of chaos energy, which was both incredibly powerful but wildly unstable (hence the name.) When Sonic absorbed their energy, he went Super, but he also went completely fucking psycho as a result. He attacked friend and foe equally.
As the comic progressed, they used Super Sonic kind of like the Hulk, Sonic was infected by the energy of the Chaos Emeralds and whenever he was put under great stress, he went Super and lashed out. This sickness lasted until the Sonic gang were able to expel the Chaos Energy inside Sonic and trap it inside a meteor in another dimension, where it formed into its own being as Super Sonic.
>>105133577 is what happened when the meteor finally landed back in Mobius and he broke loose. Super became a villain for the Sonic gang.