I find the question of "realism" in eSports interesting for GTS.
When you look at what games top the list for the world's largest eSport events, realism doesn't seem to be a factor at all.
Ultimately it's simply who plays the game the best, whatever the game is.
So it's perhaps questionable whether top level physics simulation is actually a pre-requisite.
Should there be any difference because this is a driving game?
Or does the involvement of the FIA and their overseeing of the championships mean it should be?
I can see the arguments why some say it should, but I'm not convinced it's necessarily a deal breaker either.