I would say FM2 sucks (I have PGR3 but not PGR4)
For single player, it's not fun at all. Its like real-time strategy more, if you reduce the difficulty, you get less credit but you still completed it (with less time). So noobs can win all races as well with suggest line and low AI difficulty.
For multiplayer, it's even worse. If you find a game, you have to check many things, damage type, car class, ABS, TCS, sometimes you don't mind them, but you would (at least I would) want to have suggest line forced off. When you're in the lobby, you'll see a SMALL box scrolling thought about the details, saying:
Force off ABS
No
Force off TCS
No
...
Car Manufacturer
Any
Car Class
Any
Power
Any
Engine
Any
...
I have no idea why can't they put it in
Force off
Suggest line, ABS, STM
Car restrictions
Class A, Porsche
Moreover, it's quite buggy, you cannot see which lap the car is in when you're spectating.
PGR is more fun in multiplayer, but the single player focuses very much on Kudos, which some people like it and some people don't. (Kudos is what you get if you drive "with style", I don't see why does it look better if you do some 360s in the middle of track or drifting on a straight road though)
Sorry for my bad English since it's my second language.