With all due respect var you cannot base a opinion on one GCSE.
It's like those idiots who take one maths paper at home, with a cuppa and nothing riding on it and declare it 'easy'.
Well yes.
But the average GCSE taker will be 15/16. They will be taking 10/11/12 GCSEs at the same time with very high stakes.
Come back when your DC have taken them, achieved 10 Level 9s and we can talk turkey
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As for universities, GCSEs are not the basis upon which offers are made.
The majority make offers based on predicted A2 grades.
The most selective universities use a slippery mix of GCSE grades, AS grades, pre tests, school work , predicted A2 grades and interview.
All that information gives us a very good basis on which to differentiate between candidates.
That said we're not simply looking for students with the highest IQ. If we were we'd just do IQ tests, right?