Why no Full HDR w/ Sun for Adreno 320 but you support Mali 400?

How come?

Isn’t the mali 400 just as old as Adreno 320 if not older?

on here it says 320 adreno is not compatible with those settings and even the 330 adreno has horrible performance. But you say its a driver issue?

I am just curious could it even support it?