So you all think this is the newest rivalry? PGR2 and GT4? I want you to back track to at least 1999 or 2000. At that time, a game dubbed as "Gran Turismo 2000" (now GT3) was a close rival with Ridge Racer V. RRV had the traditional two courses from the first RR, but with many more variations, including an oval course on its own island to add variety. GT3 promised better graphics, more tracks, and as you seen, you been convinced. So much so that GT3 got the "Greatest Hits" nod without even trying. Likewise, RRV was good in its own right. Trying to compare these two games then is like comparing "Virtua Fighter 4: Evolution" to "Soul Calibur II" now. In fact, some still say that both of them are good, no matter what system you own.
Now we have the college football eqivalent of Ohio State vs. Michigan in GT4 vs. PGR2. And with the "open-ended" tracks in PGR2, usually you have so many options because you're racing in a city, so of course there will be more routes to race through whatever city you're hauling butt in. The GT series needs not 4, 5, 10 configurations because it's mostly realistic. I mean, do you think people would allow you to go to Laguna Seca and run alternative routes around the circuit, or into the city of Monterrey, CA, USA? Grand Valley had two routes, and with reverse configuration, that makes for 4 courses total. You'd might as well take Tokyo R246 and come up with all sorts of different routes around the most expensive city in the world (Tokyo). PGR2 is basically legalized street racing, where you can race around a city pulling off all sorts of tricks. For racing fans, GT4 will be the ultimate game. GT was about racing with the big boys and girls even if you didn't have the budget to buy an Esperante GT1, like in GT3. Gran Turismo doesn't need to be flashy to sell game units. It's not really catered to that audience, even though it has perfectly balanced arcade gameplay with fluid realism.
I know I been on for at least a month or two, but I'm going to hate myself for saying this. But, Project Gotham Racing 2 is good at its field, and GT4 is good at its field. It is like comparing Tiger Woods in golf to Michael Scumacher in Formula One. Both of are good at their sport of choice. People can make all the comparisons in the world, but as far as I know, I'm convinced that since the first Gran Turismo, no other racing game captures the realism of GT. Others have tried to beat it at its game, or try to beat it period... heck, even a magazine said that Ridge Racer Type 4 had more cars than Gran Turismo and is even as good as GT. I will never say that an argument like this is pathetic because people want to prove something and will stop at nothing to prove their point. Anyhow, I think GT4 will once again be the king of all racing games, even beating PGR2. GT4 has gone out of its way to revise the physics altogether to make this the best ever racing exprience. Even 10 years from now, it will still be off of shelves. I'll be 31 years old when it's January 31, 2014. GT will still sell. PGR2 just made their last game better, and that's it. Class is over. You are dismissed.