The was a really good discussion on The Debate on sky sports earlier this week.
Neil Swarbrick explained how identical incidents in different games could still lead to different outcomes. In the case of serious foul play VAR will ask the ref to explain what he saw and what colour card he is giving.If VAR could confirms what the ref saw they won’t ague with his interpretation of Red or Yellow offence.
There will still be controversy and debate, but fewer “hand of God goals”