That is extremely interesting in the fact that your highest sharpness is around 2300 at the closest test! Am I missing something vital I wonder? The lowest sharpness values my tests showed on both the 24-70mm were 15,000, some were up at 18,000. On my and 70-200mm the lowest were 8000. On my 50mm f1.8 G lowest 15,000 and highest 20,000.
Can anyone advise me please why your sharpness values are so low? Am I misunderstanding something