Actually players from IPL are the ones missing out on playing against quality players, so this was agreat opportunity for THEM to face such opponents.
Azmoun and ARJ are already in Europe and have already been in touch with European professional standards in terms training, positioning, anticipation etc. for quite a long time now.
I would say these 2 are the only ones (perhaps next to Nekounam/Shojaei) who have had professional training and faced quality opponents on a regular basis, even at their young ages. Perhaps ARJ to a lesser extent this season, but on the other hand he was also part of the WC squad so he also has experience on the biggest stage.
And if there are 2 players we should not worry about not being noticed//scouted by bigger teams, then it must be ARJ and Azmoun! These 2 have been on (big) European/Dutch clubs' radars for a while now.
So I'd say players like Amiri, Ghafouri etc. getting recognized by international scouts in these quality friendlies is of more value than 2 players who are already in Europe and are already on scouts' radars.
Next to that, ARJ and Azmoun, with the European experiences they already have, can perhaps help improve their teammates at Omid. Next to the fact that they are now in their team's practices/team talks etc. which helps the bonding process needed. If by this token they can help Omid and increase our chances of qualifying, then I'd say a possible Olympic qualification is of more value than them playing against Chile, which for ARJ would most probably have been only 10-15 minutes anyways.