Comparing to Initial D, this one has wide variety of car selection like UK, EU, US cars unlike Initial D who focused on JDM cars.
However, from story and knowledge wise, Initial D gives you more in-depth about technique, car information, skills, tracks and other things that you can learn from it.
Over-Rev barely have it and mostly just too boring in any aspect and Ryouko is just a rookie fucking annoying teenage girl compared to Takumi who is clueless airhead young man but has excellent skills thanks to his dad who taught him everything from 7th grade till end of Initial D story.
The opponent from Initial D was scalingly well from Beginner to Expert as the story goes, meanwhile Over-Rev opponent just throwing everywhere (easy hard easy) literally like that.