Block-2 roughly comparable to an F-16 in size and role.But in Payload capacity, compared to the F-16, the JF-17 has half the bomb load, 8000 lbs where as F-16 has 16,000 pounds. It only has 20,000 lbs of thrust compared to the F-16’s 30,000 lbs due to which JF-17 top speed is mach 1.8
Block-3 version will be improved one due to AESA radar and a improved RD-93 Engine and this will bring the JF-17 up much closer to true parity with older models of the F-16 but still 20 years behind from today modern fighter jets.