Going over those comments-
1.) "It's exactly the same as GP3, only a graphics update (I have to turn
off most fancy options to keep a reasonable fps though, leaving me
with GP3 graphics again)."
- GP4 uses a completely new 3D engine and modeller (3D Studio), and I've seen how they import the GPS data first hand, so there's no way this game ever looks like GP3. The difference is in this GPS data, the tracks are so much more realistic to drive, heck, there's even Harrier jets parked on the infield at Silverstone!
2.) "I played F1 2002 for about 2 hours tonight, and driving GP4 after that
is a joke. It's like driving on rails again, no feeling in the car at
all, and way to easy to control the car. "
- Granted, the new default setups are fairly close to an ideal layout(apart from the gear ratios), but the development team are really trying to make the game more user friendly for the novice racer. But saying that, some real F1 drivers have test driven the game, and given it a thumbs up and if you look at the onboard camera view of this years Ferrari on a Sunday afternoon, Schumacher isn't doing an awful lot of work in the cockpit as the car is so sorted. You really don't want snap oversteer and understeer in a GP car..
3.)"I must admit I didn't test everything in GP4, first thing after I
finally got my controller working was a race on Suzuka, and after 3
laps I deleted it. "
- You're going to miss out on this years best driving sim, unlucky.