The operative word is test.
This is easier to test for bugs, and focus test. The focus test group, where they bring in random people to get their opinions, will find the GT approach more palatable than a traditional racer.
And most of the community needs to stop with the "AI is crap" mantra. The AI is doing what it is told to do, and it does it perfectly well. That is a far cry from bein a bad AI. PD keeps getting the signal that it's AI is bad, when the reality is that the implementation is bad. Well, it isn't even bad, so to speak, it's uninteresting because it's designed to let you win, and that is never fun.
Look no further than the rubber banding as proof.
I witness a great example in a race where I set up a custom race. I had my 429 Boss (tuned to 600PP) and I set a 2 lap race with "professional" level at the Red Bull Ring. The lead car was a ZR1.
It's a 2 lap race, so the bulk of the field let me by before the second corner. I was in 2nd place by turn 3. The ZR1 was already 6 seconds ahead.
The AI was ripping away doing a really good job, but again, this was set to be only 2 laps. I will repeat, the over riding philosophy is that the player should win. This is not a RACE. The player must WIN. So, the ZR1 immediately goes into slow mode so I could catch it. It paced itself perfectly so that I could catch it at the second to last corner, and it let me pass at the last corner, then, although it could have easily passed me, it sat behind me.
The fact that the AI is working so hard to allow me to win is the proof that it isn't "dumb procession AI" in that it cannot do better. It is actually very good AI, doing it's best to mask the fact that it's allowing me to win, right at the last corner!! (how exciting
).
If you are ever ahead, and the AI catches you, then it is outdriving you. I've seen the AI set the fastest lap in many instances, and I don't suck!! Even in these races, where the AI is clearly better than I am, I win. Why? Because the AI is set up to let the player win. It is not a race.
That 2 lap short race that I described also, CLEARLY, shows how the AI CAN adjust for difficulty on the fly. It COULD be better simply because you are better. It could, for instance, run at the "pro" level if you are a DR B or higher, run normal if you are a DR C, and run on easy if you have just started the game.
Again, philosophically different from other racers. Other games approach it with the concept that the player should be skilled enough to win and the AI provides a challenge to overcome. In GT, the philosophy is that the player should win, regardless of how good he/she is, and the AI should do it's best to hide the fact that it is letting the player win.
All they did with Sophy is remove the directive to let the player win.