No it doesn't.
You did quote it correctly in Post 10, but to reiterate the Law says:
Mere - used to
emphasize how small or
insignificant someone or something is.
If you were to put a probability on mere where would you pitch it <30% or perhaps even <20% whereas the actual events as unfolding you might expect >80%, >90% of professional players to score.
Remember there was no tackle that dislodged the ball, it was a straightforward catch and touch down, I would actually expect >95% with the extremely rare exception being someone trying to be a clever arse and swallow dive or such like.
Further the Advantage Law doesn't say opportunity to score, it says it might be tactical or territorial, they are two distinctly different outcomes:
- So they had a tactical advantage as they had a 3 v 0 overlap, very real and significant. Total freedom to execute whatever they may have wished.
- They had territorial advantage as they were atop the try line and needed to cover no more ground to score the try, just bend and place.
And neither of those terms are qualified by scoring and conversely should not be denied by not scoring.
So being at the try line with no opponents in front of the attacking players is not a small or insignificant advantage. Hence the ref should call advantage over.