You know that thing that gives security practitioners a bad reputation with engineers?
You're doing it.
As opposed to this, why not something more like "it's not uncommon for these two to be confused, but FTPS is FTP over TLS and isn't interchangeable with SFTP"?
Because it's longer? Pardon my foreign mind, but I do not understand, why you are offended by a simple short and valid statement nor why you are differentiating between "security pratitioners" and "engineers".
* SFTP/FTPS (SSH)
* SSH (SSH)
* SMTPS (SSL, TLS)