As is often the case in these situations, the good graph takes up less space, is easier to understand, and is easier to construct.
P.S. I think the “good graph” could be made even better by labeling the y-axis using round numbers. I don’t think the exact numbers as displayed there are so helpful. Also, I’d convert to a more recognizable scale. Instead of liters per year, perhaps ounces per day, or the equivalent of glasses of wine per week?