Is Pan 14-45 sharper than 14-42 or PZ 14-42?

He may have also been thinking in terms of weight and compactness.  Just found it strange because of all the comment about how the 14-45 was so much sharper.

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Sony F505(retired), Sony F707(gave to son), Sony
F717(gave to wife) Sony S85(great little camera that
was stolen), Sony CD 1000 (ancient but a great lens), Sony P93
Sony H9(retired) Panasonic LX3 that became an LX5 that became an LX7 (small
enough to go everywhere), Nikon D5000 that grew into a D7000 (sold), Sony HX1, Pany GH2, GH3