R* should get DICE to code their military vehicles. At least BF4 had great system for military level combat. I know! GTA isn't a milsim game...but we're getting there.
Let's check the differences:
Rhino: Only has the main cannon, unusable gunner turret, can destroy vehicles which in turn damage it for some reason, was the most feared vehicle in the game near the start. Now is just a nuisance to the lobby, but can be destroyed by practically anyone with a Homing Launcher. Humiliated by flying cars.
BF4 MBTs: Three 120mm ammunitions for the main gun (AP, HE, SABOT), two types of co-axle MGs (7.62 and .50/12.4), three different secondary cannon shots (Canister, Guided, Smart), secondary gunner turret on top, (.50/12.4), resistant to all ammo types except explosives, could hold its own against other tanks, IFVs, helicopters, etc for the most part due to countermeasures (IR smoke, smokescreen, ARENA active defense system, ERA), skill of the driver and gunner, and the main cannon didn't have a certain range to it (all projectiles had ballistics effect to them).
Since this is a Helicopter topic, let me use a comparison of those:
Hunter: Pilot controlled missiles, copilot controlled turret with two different cannon types, a bomb bay, good armor, and countermeasures that only break lock on for a short time.
BF4 Attack Helicopter: Pilot controlled Hydra rockets (Barrage), Stinger AA missiles (Homing), Smart Rockets (semi-guided), copilot controlled cannon with one ammo type (HE 20mm) and can equip AGMs (Homing), TV missiles (camera guided missiles), and though they have light armor, they were equipped with IR flares that diverted all guided missiles, ECM (electronic counter measures) that prevent lock on for a few seconds, and Thermal Camo that delayed lock on with the gunner getting different camera views (thermal and IRNV), and Air Radar that pointed out Blue and Op Force aircraft.