Most Messi versus Ronaldo arguments are really arguments about weighting. One person values Ballon d'Or awards; another values raw career goals; a third cares only about international trophies. Everyone is reading the same numbers and reaching different answers because they are silently applying different weights.
This calculator makes that weighting explicit. You set how much each of the thirty categories matters to you — goals, assists, trophies, longevity, big-game record — and it produces the verdict your own criteria imply. Change a weighting and watch the answer move.
The underlying figures come from the same database as our stat pages: 900 recorded Messi goals and 965 for Ronaldo, plus season-by-season assists, appearances and honours.