yes it really depends on the phone and the android version you are running. Those are for my gnex 4.3 stock.
actually try an older version of wifi tether (not 4.3 experiemental) because if memory serves they changed some settings on 4.2 onwards which were not backwards compatible so look for an older wifi tether version.
Found out something new: If I select Ad-Hoc for the method, it does show the spoofed MAC through the terminal. But it SSID name seems to automatically be set to TetherFallBack or something like that. I can also connect my laptop to it and then have internet through it. No success with Nintendo Zone though.
But I'll try your suggestion. Will probably do that tomorrow though, spent enough hours on this for today and I need to make dinner.