Why is the AI that terrible on race starts ?

So far, I've been playing F2 on career mode and a bit of F1 world.

While I find the AI level I chose adequate to my level (95), I'm constantly destroying the AI on race starts. Like, if I start first, I'll be 1 or 2 seconds ahead after just one sector. If I start 10th, I'd be first or at worst third after two corners.

This is so frustrating that I'm now giving the AI a one or two seconds head start so it's more balanced...