As Crash Davis points out that the difference is minor. But when you add it up each week, it is an extra hit. That one extra hit is the difference between a career and a flash in the pan.
While I don’t agree with Crash’s assessment of talent, I do believe there is something to be said about working in the margins. Getting up at 5:30 in the morning to go on a run one day doesn’t really do much. Do that three times per week for three years, and you will be a proficient marathon runner.
The margins add up over a long period of time, not in the short run.
Tip: This is why you don’t always start a graph at 0. When compared to zero, there doesn’t seem to be much difference. But when you zoom in on the data points, it tells a different story.