Since SlickEdit simply executes the system "man" command and displays its output, what you need do is to change the section search order that your man command follows. You could control the section search order at several different levels. To do it globally, become a super user and edit /etc/man.config. Find the parameter named MANSECT. Its value should look like 1:8:2:3:4:5:6:7:9:0p:1p:3p:tcl:n:l:p:o . Simply move the 2 before the 1, and save the file. This way section 2 is always searched before section 1, and in the case of the stat command, you would always get the stat system call, not the stat shell command. This also applies when you execute the man command within SlickEdit.
If you don't want the change to be global or you don't have a super user account on your system, you can set the MANSECT environment variable to something like 2:1:8:3:4:5:6:7:9:0p:1p:3p:tcl:n:l:p:o by
export MANSECT=2:1:8:3:4:5:6:7:9:0p:1p:3p:tcl:n:l:p:o
then the change is limited only to the current session.
If you even want to limit the change to a certain workspace within SlickEdit, go to Project > Workspace Properties > Environment, and set the MANSECT value therein. This way, the change only affects that specific workspace.