I don't think analyzing just the directional correctness is enough. Magnitudes shouldn't just be ignored. A trader can still make money even if more than half o

I don't think analyzing just the directional correctness is enough. Magnitudes shouldn't just be ignored. A trader can still make money even if more than half of their trades were wrong directionally, and can still lose money (or even go bankrupt) even if more than half of their trades were correct directionally.