Do you think Robert Downey Jr. exists in the MCU? And if so, do you think he gets compared to Tony Stark? If not, who starred in Less Than Zero in that universe? What about that Hydra agent from Winder Soldier? Do you think he gets compared to Robert Redford? If not, who starred in All The President's Men in that universe? Or Butch Cassidy and the Sundance Kid? Does Star Trek TNG exist in the X-Men movie universe? If so, who played Picard? Does anyone compare Professor X to him? What about Ryan Reynolds? Speaking of Star Trek, do you think that Star Trek 6 exists in the Sex and the City universe? What about Ben Affleck in the DCEU? or Will Smith? Or the MIB universe? Is Arnold Schwarzenegger an actor in the Terminator universe? Or the Predator universe? What about the Expendables universe? How many actors would you have to account for there? Anyone else getting a headache?
Oh, and think about this! Star Wars exists in the Arrow-verse but a guy who looks exactly like Mark Hammill is a villain there!