Honestly.
Marvel: "We are casting Ryan Gosling, as a talking raccoon, and Vin Diesel, as a tree with just one line."
Fans: $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
DC: "We are recasting Batman! We have the perfect man: Ben Affleck!"
Fans:
DC: "No, wait wait, we were Kidding! The real Batman is .... Robert Pattinson!"
Fans:
:
DC: "Awright, look, we'll do the Joker! The
Joker!! He's gonna be great, we got Joaquin, Joaquin
Phoenix!!"
Fans:"Hey, that looks kinda good- "
DC: "-- But it's a
one off, and has
nothing to do with Batman!"
LOL
Marvel's version of a One-off:
Source: https://www.youtube.com/watch?v=tLDetN3theY