It's not just the FZ2 though, XFG setups are still locked diff, huge front bar, minimal rear bar and very little oversteer from springs. I guess it's down to several factors coming together to create a significant effect. Tyre load sensitivity, somewhat incomplete damper implementation, lack of anti-dive/squat, simple aero (I still see a lot of high-downforce cars running obvious amounts of -ve rake.. wtf) etc. Due to a combination of things, unrealistic values may provide similar or better results..