Godol me’Rabbon – shmo (it is greater to call by his name then with titles).
No ones calls Hillel Hazoken – Rabbon Hillel.
No one calls Shmule or Dovid or Sholmo with a title.
Mordechai is just a name without title.
Titles BELITTLE the greatness.,
Yet, we have a backwards mindset (daas baal habayis hepech Torah) and feel the need for titles: Moran, Moran V’Rabbonon, Harav Hagaon…so in our warped world, saying a name without a title is demeaning of the gadol.