Sankaku Channel/

just_juan said:
Post #4852055 <-I know they're pretty much the same, but given my gif came first, should it really be deleted?

Being posted first doesn't matter. Low quality Twitter images are posted all the time only to be deleted later when a Pixiv version shows up.

Your gif has bad colors and is heavily artifacted. Despite that it manages to have a higher filesize. So yes, it should be deleted.