Comparison of enums values() method and class.getEnumConstants()

I'm trying to compare this two ways to achieving the enums values (with and without reflection).

So this is my test class:

public class ReflectionOnEnumsTests2 {

    enum TestEnum { ONE, TWO, THREE; }

    public static void main(String[] args) {
        long n = 600_000_000;
        int stub;

        //test without Reflection
        long timeStartWithoutReflection = System.currentTimeMillis();
        for (int i = 0; i < n; i++){
            TestEnum[] values = TestEnum.values();
            stub = values.length;
        }
        System.out.println("Time consuming with reflection: " + (System.currentTimeMillis() - timeStartWithoutReflection));

        //test Reflection
        long timeStartWithReflection = System.currentTimeMillis();
        for (int i = 0; i < n; i++){
            TestEnum[] values = TestEnum.class.getEnumConstants();
            stub = values.length;
        }
        System.out.println("Time consuming with reflection: " + (System.currentTimeMillis() - timeStartWithReflection));
    }
}

And I'm confused about the test results. There is approximately the same time consuming. I expected that class.getEnumConstants would be much slower than values() method.

Results:
Time consuming with reflection: 6050
Time consuming with reflection: 7483

JDK version: 1.8.0_60

Question:
So why there is no difference in performance?