No. Some people for whatever reason don't use the same name (could be it is taken on one site, but not the other, different tastes in usernames if the two accounts were created at different times, etc). For the bigger names, you can usually find their PS name on Smogon account (if it is different).Can it be assumed that every person with both a Smogon and Pokemon Showdown account use the same name on both sites (in other words, is there a policy regarding the matchup of names on Smogon and Showdown)?