Chris,
Thank you for posting those Raw files which appear to be imaged in quick succession, and from the same location and with the same lens.
I converted in C1, and the P45 shows not only better sharpness, but better sharpness everywhere - it looks like the depth of field is greater. The P30+ is much smoother.
It looks like microlenses do have a strong effect on sharpness and DOF -increased capture area translates not only into better sensitivity but also greater blur. No free lunch.
Edmund