That's easy.

They compare it to the "universal averages" without regard to mileage on the oil. Furthermore, they have absolutely no clue as to what the oil is capable of holding in suspension and not causing undue wear on the engine.

If you extrapolate the figures shown to a mileage level of 3K miles, the oil looks fantastic. Furthermore, the oil did not show any accelerated wear over the remaining 17K miles. Naturally, I can't prove the wear curve, but, for 20K miles, those numbers look damn good.