rF2 is more dynamic and overall more detailed, more realistic because it has parameters for simulating bits that influence handling that others don't even care for, because they has some data that takes all of that stuff and approximates into some number that neglects bunch of stuff that makes car alive, and only shows what is the performance like. And sadly many can't tell the difference, only real gangstas like us can. More over, there usually hardly is any data for things that are highly critical for how car behaves over the very limit, I learned it from one iRacing dev blog post years ago. I talk about sliding. Of course S397 might have gotten some great unique data from tire manufacturer, maybe because tire manufacturer extracted it mainly for simulation purposes, and what they gave undeniably has to be better than what is possible by just guesstimating through observation and whatever else there is to rely on, but in both ways good stuff can be achieved, and in both ways knowledge and talent is needed. But it is only possible first of all because physics are schemed in such way that it even takes things in account. At the end of the day you should be able to see in the replays quite similar things what can be seen IRL footage, and it should also vibe pretty hard while actually driving onboard in simulated racecar. I vibe a lot with the March. Not so much with McLaren. I'd like to say again that in age of data, AI, computers, simulations and overall technology + herding(school classes, university groups with no intimate connection), human sensing, having imagination and making pictures in mind is very underrated. For a normal person it would sound very unbelievable and strange that one could have a power to just decide something without being told what to think, do, say without some dead exact guide, rule or cornerstone AND do it right. So of course everything is 100% data and laser scanned - with no chance of human error.