Compare pow

/**
 * A function which takes two arrays in argument and tells which number is bigger
 * @param {array} n1 - an array of two string
 * @param {array} n2 - an array of two string
 * @return {number} - -1 if n1 > n2, 1 if n1 < n2, 0 if n1 = n2
 * A sample input could be : n1 = ['221', '134'], n2 = ['9', '300']
 * To understand the algorithm used: 
 * see http://villemin.gerard.free.fr/Wwwgvmm/Analyse/PuissCom.htm
 */
function ComparePowers(n1, n2) {
    // Convert string to number
    var number1 = parseInt(n1[0]);
    var power1 = parseInt(n1[1]);
    
    var number2 = parseInt(n2[0]);
    var power2 = parseInt(n2[1]);
    
    // Calculate the power divided
    var powerDivided = power1/power2;    
    var number1Powered = Math.pow(number1, powerDivided);
    
    // Compare
    if (number1Powered > number2) return -1;
    else if (number1Powered < number2) return 1;
    return 0;
}