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Read the original score
The original paired record has R²=147/151≈97.350993%. That number is not a 97.35% probability of future success, a percentage profit or proof of manager skill.
Inspect what the score removes
Replacing every asset return with its negative preserves R² and reverses correlation and slope signs. A squared fit score therefore cannot establish whether the fitted relationship is positive or negative, let alone whether an investment is desirable.
Retain the appraisal model
Risk-adjusted performance interpretation needs the relevant return basis, benchmark and model. A raw intercept is not automatically Jensen alpha, and a correctly computed alpha estimate still does not settle luck versus skill.
Use the actual evidence gap
Review the data window, return definitions, residuals and required uncertainty analysis. The calculator supplies a descriptive fit rather than a recommendation or performance certification.