1var result = [];
2var aScore = 0,
3    bScore = 0;
4
5for (var i = 0; i < a.length; i++) {
6    if (a[i] > b[i]) aScore++;
7    if (a[i] < b[i]) bScore++;
8}
9result[0] = aScore;
10result[1] = bScore;
11return result;
12