Explanation:
Numbers in Set A = {45760, 1025680} can be compared easily based solely on their length. The larger number is so much longer that it has a greater visual impact that allows it to be readily seen as being the larger number.
Numbers in Set B = {492111, 409867} are the same length, so must be compared digit by digit. The first digits are the same, so the comparison must move to the second digit.
This Set B comparison operation is more tedious than the comparison operation for Set A, so it seems Alisa has a point.