User blog comment:OrchidSomnium/Dear FANDOM Staff: About This Site and UCP/@comment-36107211-20201107035350/@comment-27831991-20201107074613

-grade is not the same as -date. -grade is doing something to its performance, -date is getting something up to an age. An upgrade would make it perform better, an update would make it more modern, while a downgrade would make it perform worse, and an downdate would make it less modern.