The graphics, sounds, effects, variety, and overall atmosphere is just so much better in FH2 than in RO/DH though. Even though I prefer RO/DH's gameplay, the dated visuals and effects really take away from the experience. The FH2 has some really excellent artists on their team. The Ramelle map is just incredible.
Even though tanking is much less sophisticated in FH2, what I like about it is that you can really feel the weight of the vehicle. The physics on the BF2 engine seem to be more advanced than on UE2.5. The tanks actually rock back and forth on their suspension, and the distribution of mass on the vehicles is modeled as well. Countless times have I flipped over the Marder I trying to navigate roadside ditches in Operation Cobra.