You have not specified if you are using the obsolete
devilspie or the newer
devilspie2. In any case, as far as I can tell from their manuals, neither one of them has access to the information you want.
Devilspie is a window matching utility, it interacts with the X server. The commandline switches you give when you launch a program are not passed to the X server since they only affect the way the program is launched and are internal switches of that particular piece of software.
The closest seems to be the
get_application_name() call but I doubt that would include the command line arguments. You might be able to do what you need using
xdotool (see here) and parsing the output of
ps aux or
pgrep -al $APP_NAME.