The difference in output between the two commands can be attributed to the psscan plugin identifying hidden processes that pslist does not. The pslist plugin enumerates processes by walking the active process linked list, capturing active and unhidden processes. On the other hand, the psscan plugin scans for processes in memory, including those that have been hidden or terminated. This would result in psscan finding more instances, as indicated by the higher count in the second command's output.