So, two people of equal intelligence, insight about automation, wealth, etc. are in a field...who is more successful? The one who works 10 hours a week or the one who works 70?

As I've pointed out elsewhere, the stories of great things being done by workaholics are absolutely overwhelming. Warren Buffett, Edison, Franklin, Jefferson, Einstein, Carmack ad nauseaum.

That's anecdotal, but then you dismiss the science behind long, targeted training to become good at things elsewhere in this forum.

I really hope that other folks don't use the current voting pattern in this thread as evidence that doing more work isn't helpful. Trust me (or don't), other people in your field are smart. They are automating tasks, etc. Working more is a battle-tested method of gaining an advantage (or at least staying even in fields where everyone is working as hard as they can).