Tables such as these purport to show the probability, X, of making Y tricks with Z high card points in the declarer's hand and dummy (using computerized double dummy analysis).
How do actual tournament results compare to such theoretical results? Some experts believe that declarers will do better, and defenders, worse, than these theoretical results. That's because it is harder to defend than declare. Such experts might e.g. bid suit games with 23 combined high card points, even though the computers say this is usually a losing proposition.
Does the record show that making such aggressive bids "beats the spread?"