def compare_two(objects, key1, key2):
    """Compares only a specific pair of objects for all the rankers.
    It is assumed that key1 is lower ranked than key2 in comparison.
    Hence, a flip is ordering key2 above key1.

    """

    agree = 0
    disagree = 0
    for ranker in range(len(objects[key1])):
        r1 = objects[key1][ranker]
        r2 = objects[key2][ranker]
        if r1 != None and r2 != None:
            if r1 < r2:
                agree += 1
            elif r2 < r1:
                disagree += 1
    return agree, disagree