Eventually, Batman and Superman realize that they get a whole lot more accomplished working together than trying to elbow each other out of the way to be the first one to call dibs on stopping Luthor's latest scheme. 'Enemy Mine' only works so many times until suspension of disbelief is first challenged, then broken by the growing realization that the status quo will never change, which is the death knell for fantasy stories that rely on suspension of disbelief to maintain audience engagement. Warcraft's storyline has suffered from suspension of disbelief problems since WoW's inception, and it's only grown stronger since Wrath of the Lich King as Blizzard's unwillingness to allow the storyline between the factions to evolve beyond a decade-old status quo often intrudes on the storytelling; characters have been completely derailed to the point of a 180-degree about face on previous characterization and direction for no reason other than to keep the war ongoing by Blizzard's own admission (cases in point: WotLK-onward Garrosh versus Garrosh at the end of the Nagrand questline, comics and WotLK Varian versus the Varian from the novelization of Beyond the Dark Portal, and MoP Jaina versus Warcraft 3-Cataclysm Jaina).