Having these traits alone won't make you succeed but if all other conditions are met your will have bigger chances of succeeding.
My point is that these traits are shared among tons of founders who didn't succeed. So they clearly don't make founders succeed, making "What Makes Founders Succeed" a poor title for Jessica's post.
I said that I agreed with your comment. Those traits may increase chances of succeeding when starting a startup but aren't the only thing you need to succeed.
We should learn the other side of the equation and analyze people who didn't succeed and why. Then we will be able to compare and prove (or not) increases probabilities.
My personal experience, it did for me.