And then Rallisport Challenge 2 came out at 60fps and it had even better graphics than PGR2.
I might agree that RSC2
looks better, but graphically PGR2 is arguably doing significantly more each frame. RSC2 splits its world visually into
really small bubbles with extremely low-quality backgrounds that you mostly don't notice courtesy of the game being fast. PGR2 also supports twice as many cars on the track, and it renders a rearview mirror when in bumper cam, which is beneficial for gameplay and can be graphically costly due to adding an extra geometry pass.
The comparison of PGR2 and RSC2 isn't the important question, though; it's apples to oranges. The important question is whether RSC2 could have done noticeably more per-frame at 30fps, and the answer is blatantly obviously "yes."
Also, Metroid Prime 1/2 and F-Zero GX are among the best looking GC games. Both at 60fps. Same with Ninja Gaiden on XBOX. These are games that look like they suffered no graphical compromises for their 60fps update.
Again, compared with what? Are you actually claiming that these games couldn't have expanded their rendering and/or gameplay if they had targeted a lower framerate?
Those games mostly don't have very sophisticated lighting models, and they don't tend to have very massive encounters or large contiguous environments. Maybe that was fine for the gameplay and artistic visions of those games, but hacking things away to hold 16.7ms arguably would have been very destructive to something like Halo.
//==================
I guess I just don't get what point you're making. Are you saying that the graphical and gameplay design possibilities between games that target 30fps and 60fps on past platforms are nonexistent? That's obviously a false statement. Are you saying that all developers who targeted 30fps in the past are untalented hacks, and the developers who targeted 60fps are geniuses? Maybe, that's partly a matter of opinion, but that wouldn't disagree with the claim that dropping to 30fps gives the opportunity to do much more per-frame, it would just say that the best devs didn't actually do it.