What does that mean?
Good pilot management is something that you can represent in every single difficulty level. Boosting the difficulty level up to Insane changes several parameters, like multipliers (effectively making the game harder) - but other than that, it does nothing.
EDIT: What I'm saying here is that, IMO, ST:R was poor in the "describe your opponents" compartment. I haven't read any messages that made me feel frightened, worried, under pressure, etc. etc. due to the fact that I was fighting the best pilots of the GTI (and, consequently, of the GTA). That's it, raw difficulty has nothing to do with this.