It's not a big secret. The PLAAF in 1962 consisted mainly of MiG-15s and J-5s, while the IAF consisted of French Ouragans and Mystere IVs plus British Hawker Hunters and Gnats.
The PLAAF had the numerical edge while the IAF had the technological edge. In that respect not much has changed since 1962.
hahaha, since when british hawker hunter an gnats was more advanced than MG15 and MG19?
BTW, in 1962, MIG19/J6,instead of mig15, was the backbone of PLAAF.
In 1962, CHina already had set up full defence industry base in Manchuria and could produce thousands of J5/J6 every year ,if necessary.let alone thousands of Mig19/mig15/J5/J16 in service of PLAAF.
Instead, at that that,IAF had only hundreds of old WW II antique aircrafts and could not produce jet bird at all.
if air war were to really take place in 1962 BTW india and CHina, IAF would be wear out in week ,and india would be a country without air force soon.
In a word, IAF in 1962 was just a sitting duck in the fornt of PLAAF. Nehru was very wise not to launch a air war against CHina.