F1 2013 vs Game Stock Car @ Interlagos

Let's compare Game Stock Car 2013 (with a 7 year old engine) to F1 2013 which has a 1 year old engine.
==================================
PC SPECS

OCz Corsair Black Vengance 16GB DDR3 Ram

ATI XFX 7970 3GB DDR5

Intel Core I5 2500K Unlocked 4.0Ghz

Windows 7 Ultimate 64-bit

2TB Hard Drive

240GB SSD OCZ

==================================

CHANNELS I RECOMMEND

(Flight Simulator X)" was created under Microsoft's "Game Content Usage Rules" using assets from Microsoft Flight Simulator X © Microsoft Corporation.

- TAGS -

Very Realistic Takeoff Video of Early Morning Landing Manchester EGCC Heathrow Aerosoft aviation Simulation epic new Greece plane flight sim simulator real movement cockpit wingview takeoff australia sun wet landing window go around orbx FTA fta AA ultimate terrain fs global hd movie fsx fs9 fs2004 aerosoft boeing airbus a330 a340 747 qantas london heathrow spotting crash wow amazing hard soft smooth Extreme Crosswind VFR HD long ORBX Stewart Airport

[ImpulsivePlayr]

better physics, night time racing is now enabled (most tracks have had lights fitted) colour depth has been improved in the game (HDR) New Cars have been added... and because it's awesome!

[ggman]

thanks mate . I like this game a lot but I just feel there is something missing. Is it the "atmosphere"? People seem to love it but they're always playing something else such as rfactor 2, iracing or formula truck. I think it's destined to be a very good game that trends in while people wait for something better...but I could be wrong. Enjoy it mate. No doubt i'll still upgrade to gsc 2013 as I have 2012

[ggman]

what has improved with gsc 2013 the most please? (over 2012)