That's really interesting and odd.
I thought it was really hard to get good grades in physics - at least that and further maths were known to be tough when I was at school but I suppose that was more than 20 years ago!
Maybe they've weighted it that way on purpose?
Although, I think it said more girls took maths this year than boys.
Maybe they just wanted to get rid of the "too hard won't bother" offputting effect from the past, to encourage more to take it up.