Subwoofer Comparison

So, it's a spreadsheet which contains the CEA-2010 measurements of various subwoofers. How do we determine which one is good ?
It list down the SPL at various frequencies. Can someone shed some light on it ?

So if a subwoofer has more SPL at a given frequency - which means its a good one or its a threshold value after which the distortion comes into picture?
 
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