Actually how's X5 with full damage on? You're able to survive that long seeing how tight packed the racing is?
With the longer races I take less risk. It's a more realistic experience. The field also stretches more so if i'm careful during the fist couple of laps I can then pick my opponents off. I line my opponent up for the pass rather than try to get past at all costs like people seem to do online.
The cars all have different strengths and weaknesses as does each opponent of course. This becomes more apparent in the longer races.
I had a race where I was lapping a similar pace to the girl in front (Sofie Muller) at Algarve.
I found that she was pulling away from me out of the corners but I was better under braking. I spent at least 5 laps behind her but eventually pulled off a clean pass into T1 by watching her line and only making the move when i was sure I could squeeze past.
It's a much more satisfying experience (for me anyway) than bashing my way through the field, getting taken out and then complaining that the AI cheats. LoL
I actually think Codemasters have done a wonderful job with the AI. It can be a surprisingly "sim" like experience if you want it to be.
Sure there are occasions where mid race I get T Boned. My race is ruined and I spend my remaining laps cursing the AI. However watching the replays can be very enlightening. It's surprising how many of those incidents are actually my fault!.
At least with longer races I have a chance to catch back up. Settling for a mid pack points finish adds to the whole championship thing for me.
It also adds longevity to the game as I can replay the championships I didn't do well in.