If there are differences, that is a mistake in the original drafting.
Why has it has been ignored for eight years.
Why has it not been dealt with as a minor adjustment already.
It would take about half an hour to put through parliament.

Steve,
You really haven't got a clue about this, have you, Keith?
So what exactly have I got wrong?

Civil marriages have been a fact of life in Ireland for 8 years.
As a result of the referendum you can now have exactly the same thing but call it marriage.

What has been achieved is just a small alteration to the definition of the word "marriage."