You are right about, that India won't learn about the tactics PAF would use, just by training with F16s of Singapore or Israel, but the part about the Migs is not correct.
The surprising point was not how the German piltos flew them, but the technical capabilities the Migs had, compared to the once that Israel and the US tested! The Germans tested Mig 29s with HMS and R73 missiles, which turned out to be a threat for their Phantom fighters, because the R73 was way more agile than western counterparts. The Migs the US trained with, didn't had such capabilities, therefor the US couldn't train to counter this until they know about it. The result was, to improve their own HMS capabilities and develop modern WVR missiles with comparable capabilities as R73. That's why Asraam, IRIS-T, AIM9X or MICA were developed with TVC and high off boresight seekers.
Undoubtedly the archer played a great role ..but the Luftwaffe put some of its best pilots into those fighters. They knew how to use the system to its maximum potential.