To be honest its not the same. Cuadrado placed his legs so it would touch the defender and then fell. There is a clear touch from Milik on the Napoli actor but I am not sure its one which warrants a foul. Its a situation where either decision should be accepted.
Cuadrado was a clear dive. nothing debatable about it.
It's not the same, sure. One could make an argument that at the speed Cuadrado was charging the slightest contact is enough. Don't get me wrong, I don't think it's a foul and a penalty, but i've seen a number of penalties like that (grounded on technicality) given against Juventus. It's very easy to do, zoom in on the feet> find an angle where the contact is clearly visible> play it back and fourth emphasizing the contact> no choice but to call it a penalty. Technically there was a contact.
One could also make an argument that the ref was allowing some hustle all game long, so according to the precedent he set himself- no way it's a foul by Milik.
Then we come to the whole thing about can you or can you not check the supposed foul or not. Since it seems to change on who wants to check it; if it's a possible foul by Juve, then by all means, please check. If it's against Juve- fuck off.
Couple of seasons ago we had an example like that in the same week, when it was not possible to check an attacking foul against us then the next game Juventus goal was disallowed for the same thing.
Paraphrasing the famous chief of police: VAR is powerless to *help* you, not punish you.