That doesn't mean there is a false dichotomy where we can't also achieve baseline literacy for all; that's a complex sociological problem which might take a genius to solve.
Personal side note; I’ve tended to find that exceptional people are more productive with the resources given. So I find it hard to believe the inverse would also be true.
The way schools are currently measured, the 5 are very, very important and the 10 are completely irrelevant. The only judgement is how many of the students are below the appropriate skill level. I don't believe anyone even measures how much in advance of the skill level students at or above the minimum are.
This is how schools are judged: what proportion of their students pass a minimum competency test.