When you can predict the future with this level of accuracy, it tells you that his understanding and model of politics is true.

No.

When you can predict the future with this level of accuracy, it tells you that he understood enough to get this much correct. (Obvious to anyone paying attention.) The rest of his "model of politics" remains ripe for analysis. Only after studying his collective body of "predictions" can you determine the percentage odds for his model's truth.