There's no such thing as a free lunch. You're getting paid for the work you actually do; wages will shift to accomodate the market for an hour, day, or week of productive work regardless of how "vacation" is divided up. Similarly, many European countries have a "13th month" paycheck; any high school student can see they're not actually getting paid more, though.
This chart is flawed, in Korea and Japan these numbers are way off with reality.