User blog comment:Myself 123/Sonic Forces is Generations behind/@comment-25826354-20171208161353/@comment-477304-20171208182246

The Havok engine is thrid party and is used by multiple developers, presumably it can be tweeked to suit each developer's needs. Regardless, they still had the same tools available that they did for Generations, so they should've been able to replicate the physics and controls and whatnot.