Not to go all anti-objectivist, but I've yet to see a consistent equation where (quantity of work) * (quality of work) = wealth
There's a myth of the hustle that gets perpetrated whenever a feel-good story about a hard working, intelligent person's success gets bandied about.
The reality is that I'm where I am at least as much because of who I was born to as to how much hard work and diligence I've put into my professional career.