If you want to bring the discussion onto realism, LFS is horrible. Gav will agree (as he watched, in person as i did this) its perfectly possible to slide LFS cars to daft levels. I have entered corners at 60deg angles, with the wheels locked and the engine stalled, and it eas easy controlable.Yup - he was sitting in my house, with an unfamiliar wheel, unfamiliar pedals, the lot. First time he was on, he was entering the corners all crossed up. And he doesn't mean 60 degrees facing the corner... 60 degrees facing
left while braking for a
right hander. Totally in control. I had a shot immediately afterwards, and it's simple to do. That's not even close to realism. Bloody good fun mind. :D
The other thing that bugs me about LFS is the graphics. You can get poor FPS while the game looks like crap compared to most sims. The models in GPL look better than LFS's. The LFS models have more to them internally perhaps, but in general it's just very lacklustre with a high-end machine.
Likewise, I've struggled to get into rF. I simply can't stand ISI engines. The default graphics are even worse than LFS. FPS drops like a stone as you add cars. As things stand, however, I'm closer to rF than LFS, and if one of them were to take off big time, I'd say rF is in the better position to be it. It's a fair assumption to say that rF is where the major leagues will be in the coming years, as GPL ages more and more, and NR2003 and its mods get harder to come by.
I've had as many online LFS races as I've had rF now. Both are miles ahead of any other sim. The collision detection is something else from the previous trend setter (NR2003 IMO, GPL in Dave's by the look of it). There's certainly less warp/ping related crashes in rF than LFS, but it takes a freaky occurance for LFS to have a warp crash. It certainly doesn't happen much. I also can't put my finger on why, but LFS doesn't seem to work online on street-circuits. It's great fun racing the UFs around one, but the way they collide with walls online just doesn't seem right, and as such following drivers can't instinctively avoid creaming into accidents. It's hard to pin-point, but those crashes just don't feel natural, while in rF they do.
For fun, GPL, NR2003 and GTP are all so much more rewarding online. Things seem organised. They've been around long enough for everything to be honed, people to have settled into leagues, and everyone seems to know everyone else really well. Even if you're in a pick-up race, you seem to know how people will react. And in our GTP endurance league, despite there being upwards of 100 drivers per race, sharing 35 cars, you know how a certain team or driver will react when you come up to them. That makes a hell of a difference.
So in short: technically, both LFS and rF are the better online, but neither feel as rewarding as GPL or NR2003.
I should have started this with "once upon a time"... :\