Sure Prologue had the ability to adjust individual gear ratios, 3 tuning profiles and leaderboards. But it did not have damage, tire wear and fuel consumption, dynamic weather and lighting and car customization, to name a few. Online was also mediocre in Prologue.
You miss the point entirely. Having a few features that are mature and functional actually means that the title is "more complete" than a title with more but UNFINSISHED features.
GT5 simply "has more stuff" than GT5P did. But it does not mean that it includes all the stuff from GT5P and then has more added - which it should - afterall, the prologue was to entice people to buy the final - It was classic bait and switch, which BTW if proven to be intentional can and will be used to succesfully litigate against Sony and PD for false promtotion and advertising - even though they have a copout clause that says 'features may not appear in final game" - they are tricking reasonable people into believing that the features they are trying out, will be part of the final package.
Dealership events in Prologue is also present in GT5. A-spec one make race in practice mode.
And these earn you credits and XP?
But lets approach your position with a logical question:
Please explain why it is good for the title, franchise, consumer and the comapny to release a prologue preview with XY & Z features - then they SELL the preview to people using the presence of X,Y & Z as promotional material.....
Only to drop X and Y features and severly reduce the Z feature but add A, B, C and D but do not even bother finishing A,B, C and D?
Why is it good that they chose this approcah and why should we as repeat paying customers accept it?
I just wamt to try understand the rational behind all this? No arguments at all, just trying to understand how this development lifescyle is good.