Well;
I am not here to double down on speculation, as far as F16 being shot down, thats an assertion made by some reputed defence corrospondents like Shiv Aroor and Vishnu Som, so it is a assertion with some credentials, as far as solid proof, if there was concrete evidence of F16 wreckage or other evidence with india it would have or will surface, untill then it remains an assertion.
An Aim120C5 debry with S.No belonging to Pakistani order is the only tangible evidence, it shows that a Aim120C5 was fired now whether it was fired from a F16 or a Suzuki Mehran with a link 16, that is purely for up for readers to argue with, I won't get into that.
The contention on this forum has been that the S.No has been from Taiwan (spelled incorrectly ) from REPORT TO CONGRESS ON SALES OF SIGNIFICANT MILITARY EQUIPMENT TO FOREIGN ENTITIES. from the year 2009, the same report of 2011 states US sold RQ-4 Global Hawk to Pakistan, which we know is not true, and thus I personally will not provide credence to this report.
My post was just to clarify on AIM 120C5 S.No. rest of the hoopla is just entertaining to read.