It is definitely more detailed.
It won't dethrone SPMBT and its ilk anytime soon, but you can stage a pretty thorough land engagement, complete with tanks, mech infantry, artillery etc. Pretty fun to watch and allows for plenty of what-if experimentation.
Realistic proximity damage modeling and the CEP-based accuracy model for anti-surface weapons also mean that now you have to be careful when providing supporting fire to friendly troops. They probably won't appreciate it if you drop a Mk84 or heavy gun shell close to them.
The combination of mobile ground units, CEP-accuracy, aimpoint-type facilities, more realistic artillery, more varied weapon & warhead types (frags, cluster, incendiary, nukes, HEAT, HE, penetrators etc.), more detailed damage models that take into account warhead type and target nature, far more detailed terrain (with effects on LOS etc.) and weather effects on sensors, air ops etc. makes for an altogether more realistic and detailed combined-arms experience.
Plus, HARMs rock
