deleting lots of files - ftp vs Plesk

Bulk deleting all files on a website - found that deleting via Filezilla ftp client was taking a long time, since each file delete command was being sent via ftp. Logged on to Plesk, chose the directories to delete and chose the Remove button, opting to not move to Recycle bin - this went much faster, since Plesk would just use the OS command to delete the entire folder and all files in it.