I'm not sure about the ellipsis/parenthetical stuff, but I think that:is different fromIf there is one fact which stands out in the history of science more than any other fact which stands out in the history of science.....If there is one fact more than any other which stands out in the history of science
In the first case, you consider all the facts that stand out, then you pick the one which stands out most (if it exists).
In the second case, you take all the facts in the history of science before considering the one that stands out more. That's a subtle difference, but in 1) you necessarily imply that some facts stand out more than others, whereas in 2) you're not sure about that.
This doesn't change much in this context, but it could in another one.
What do you think?