advantage? only if you suck at Manual and still learning it
there is clearly an advantage
besides that you have make no errors, on assisted you just need to tip pass button, where on manual you have to hold it for a while when you need more power
as time is crucial when getting attacked it is often the case that your pass won't get to the receiver when on asssited it would have worked
same goes for through passes, crosses, shots,...
therefore it is an uneven match!!!