There can be a counting error: But not when IAF had to count just one!
Have Proof Pakistani F-16 Shot Down, Says Air Force; Refutes US Journal Report
news/pak-f-16-was-shot-down- says-air-force-refutes-us- journal-report-2018648
Between one who has proof and the one who quotes 'unnamed sources', I would trust the former
M G Warrier