It’s hard to compare as my driving has progressed so much.🤷🏼♂️ Roughly I’d say it’s much slower in a straight line, however it’s far more controlled and stable through corners. As my 620r hasn’t sold yet, I am tempted to get it out for a track day. That will be the true test as currently I am around 1-2 seconds a lap faster in the 420 👀🏎