A Passmark benchmark should never be a considered a decisive factor to upgrade the CPU. Synthetic benchmarks rarely recreates real world usage.
As per example some Adobe Photoshop CS4 filters + layers application, if you look for some reviews about it, the i5-2500 is a click faster than the FX-8150 at doing it.
And at the passmark scores the FX-8150 scores 8403, and the i5-2500 scores 6654...
Sadly, this chart only means which CPU are better at Passmark, and nothing more..