I don't see any "experienced" in what was quoted. Besides, experienced compared to the poorly trained Ethiopian counterparts or experienced w.r.t flying hours? Also is the fact that the russian airforce couldn't even fly properly after their collapse of the S.U and these ex-russian pilots, would have gotten way less flying hours than the IAF for sure. They may be "experienced"(which is yet to be proved btw) compared to the EAF, but not the IAF.
And what about their missile storage?
Just to give an example:
R-77-3.jpg (image)
R-77-4.jpg (image)
R-77-5.jpg (image)
And that is for the latest version of R-77. R-27 is a more bulky and a complex missile, than the R-77. And the R-27 used would have been the previous versions, not the latest, making them more susceptible to the elements.
Besides, the Ethiopian Air force bought Su-27s which were
SECOND HAND and most likely the armament would also have been second hand stuff as well since literally thousands of missiles were simply lying around, after the collapse of the Soviet union, and it makes more sense for the Russians to sell these relics off instead of seeing them rot away in godowns, and it also makes more sense for a cash strapped airforce like the EAF to get these second hand weapons as well. Even the russians would have not maintained their missiles properly before transferring them to the Ethiopian Air Force because of the sorry state of their military after the collapse of their country, let alone the Ethiopian Airforce.
Seriously, comparing experiences of Ethiopian air force without knowing all the details and super imposing the results on to the highly professional airforce like the Indian Air force is one of the dumbest propositions ever.