Why not just restart the race and try it again, the races aren't all that long and if you're a good driver in the game and don't crash alot then maybe you'll win, just keep trying, or stop playing. Even if it does have slight Rubberbanding (I don't think it does myself), there are many games that have had rubberbanding and aren't shit because of it. If you actually own the game, the time spent arguing about this way outweighs the time it would take to retry the race. Also if you believe it's a problem happening alot, why not take a video and share with us, it's not too hard to record and I wouldn't mind seeing if the rubberbanding is real or not. Either way it wouldn't detract from the enjoyment of the game myself, but we need some kinda proof if you want people to believe that there is rubberbanding in teh game and not just "ohh he passed me
I'm about 2/3 through the game so far and very, very rarely need to restart a race in order to finish first (have done so many 5 or so times), but I have definitely noticed rubberbanding by the AI cars... if not modification to their actual speed, then at least large changes in their driving ability.
If it were simply a case of "people need to learn to take a corner", then in races where I screw up, and one of the AI racers ends up a good few seconds ahead out in the clear, I wouldn't have zero difficulties catching up to this racer
in every single occurence. I used to end up in this situation quite often in PGR games, where some natural disaster occurred between the rest of pack earlier on in the race, leaving one of the racers clear out in front. Catching the AI in this case was often a nightmare as it was still hitting turns with roughly the same ability it would be doing in a closer race. In Driveclub I catch this AI on a consistent basis, even when I don't feel that I've raced especially well to do so. More often than not, some of the AI trailing me also manage to close this gap.
Now the thing is... despite winning nearly every race I take part in, I almost never manage to put any significant distance between myself and the AI behind me, even if I manage to get out in front early on. By the end of the race they're pretty much always on my ass, and I sometimes resort to blocking them off to prevent them passing me at the finish line. This can even happen in consecutive racers when I replay one in order to satisfy a time goal... I may miss this goal narrowly in the first race and eek out a win, replay the race beat it comfortably... and... eek out a win.
It's not simply a case of people turning into idiots and fucking up their corners in the last lap of every race for some reason. If they were simply shit, they wouldn't be in first to begin with.