The difference, though, is a little illuminating about the respective communities:
(The joke is that both these posts linked to the history of the current viewer.)
The best April Fool's joke I saw this year was also on Reddit, in the Overwatch page. The moderators made a small notification that sometimes appeared in the lower right corner and looked exactly like the Battle.Net notifications that appear on your desktop if you have the Battle.net app open. The notification said "Overwatch is now playable."
Understated, perfect for the target audience, and brilliantly cruel.