The Commands that are common between Finder and Path Finder should behave exactly the same by default.

If a different behavior is desired by some users, it should be a user-selectable option, not be hard-coded, nor the default behavior. It is extremely irritating when one switches from Finder to PF and gets different results for the actions.

For example, these two discrepancies drive me crazy because I use them so often:
1- Hitting Enter when File/Folder is selected, should edit name, not open the item.
2- The COPY command on a File/Folder should copy the NAME, not the PATH. PF already has a "Copy Path" command for that purpose. Finder copies the Path and so should PF.
(Note that the "Copy" in Finder copies two things, the Name and the Item, so that the PASTE is context-sensitive. I am only referring to the case when Past is done into a pure Text context, like the name field of another file or folder).