I think the above comment stands. The point is, what do they consider maths ability? High school maths has very little to do with programming but university-lev

I think the above comment stands. The point is, what do they consider maths ability? High school maths has very little to do with programming but university-level maths certainly feels very similar to it in structure. Many of my (good) classmates in my maths degree were very bad at things like mental arithmetic. So maybe "maths ability" (defined some way) isn't very important for being good at "maths" (proper).