Arjun a has a bigger engine but weights over 13 tonnes more than Al Khalid.
Speed is almost the same of both tanks.
Arjun has a 120mm main rifled tank gun which has to be loaded "mannually" where Al Khalid has an Automatic Loading 125mm smooth bore gun.
The operational range is almost ideantical of both vehicles.
Both vehicles use Night vision and Thermal imaging devices to acquire Targets.
Al Khalid uses Data link which can communicate Tank footage and vital coordinates with other units around ie UAV/UCAVs , APCs , Fighter Jets , Cobra Gunships and artilliry command centers.
Arjun has no Data link , not that i am aware of at least !
Both vehicles carry similar 7.62mm and 12.7mm Machine guns.
Both can fire Guided Missiles from their main gun.
Al Khalid has a power-to-weight ratio of 26.66 hp/tonne gives acceleration from 0 to 32 km/h (0 to 20 mph) in 10 seconds and a maximum speed of 70 km/h, the speed and agility also helping to improve survivability which is greater than that of Arjun's.
Al Khalid has a Rate of fire/minute of 8 where Arjun's Rate of fire/minute is 6.
Al Khalid has been in Mass production which Arjun is yet to see , so far as many as 220 Al Khalid and Al Khalid 01 have been delivered to Pakistan Army.
Al Khalid takes only 3 crew to operate the Machine while Arjun Takes 4 hence making it more expensive to operate , heavy and risks more lives.