We don't make any claims at all - we simply show you in our reports the actual results versus the original predictions. We supply you with that data so that you can make your own judgment as to the best calls for the week. Just remember that there is a large element of randomness in the performance of most of the less strong teams, and even the very strong teams are not as consistent as you may like them to be!
One of the most interesting betting reports we post is how the Bookies' own predictions did for Europe and Americas. You will notice that even the Bookies' Top 6 calls are not that reliable (a maximum of 80% for European "Favourites" (where the Odds are 1.50 maximum) and not more than 60% for the Top 6 in the "Americas").