The weight of good needs to be measured, just in the same way we measure the consistency of actions, to in the end decide, whether one is "good" or "bad".
who provides the measure?
I'd say objectively we all know what is "good and bad", but
I don't think that this is necessarily true although there is likely an average. Still, take away any form of self- seeing thinker and I don't know if the universe itself would discern good from bad, there would only be 'possible'.
Why is the Buddha weighted more heavily than the fly?
In your view.
you have now put a price on livesin a ranking system, lives that you can't possible under stand except through your opinion of their importance. So now, which life is more or less important Buddha, Jesus or a child's?