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Peter Nickells
Let's say you have 4 persons trying to measure a distance between two points just by walking it and saying what they think it is.
Number one concludes right answer is 61 m, the second concludes its 58 m, the third concludes its 65 m... And the last one concludes its 18 meters.
What people is doing is conclude the real distance should be around 60 meters, beacause 3 persons estimated something around that.
The same way, if roughly ISI based Sims (Race, rFactor, GSC, ...), iRacing, netKar go in the same direction and concept about what real means, and pCars goes in a total different one, most likely the person measuring 18 m is pCars in this case, specially if other simcades measure "18 m" as well.
Compare sims is not stupid, its a good tool.
Regarding comparission with real life, most real drivers will support the product they have contract with
For GT Academy drivers GT5 is "the real driving simulator", for simraceway ones that is over all the rest, for others iracing its the only sim, etc... all depends on who pays.
I never drove all the real cars in all the sims, but there are some basics in common and with my limited amateuristic experience in track with few of them I can say what is similar to what I feel driving in real life and what doesn't...