Originally Posted by
Huntsman Spider
Given that Marvel's Ultimate Universe was built at least partly on ideas and themes explored in The Authority, which was a Wildstorm book, I'd say maybe Wildstorm might have done a bit better integrated with Marvel compared to DC, which always felt to me a little too optimistic/idealistic as a superhero universe to jive well with Wildstorm's tone. At least with Marvel, it was baked into the cake from the start that the heroes were imperfect, flawed individuals trying their best to do the right thing in a world that didn't always or often respect, trust, or appreciate them for it. Of course, Wildstorm took that somewhat further with many of the heroes and villains being largely products of super-soldier projects for covert/black ops like darker versions of Captain America (to say nothing of how Grant Morrison revealed in their X-Men run that Weapon X --- actually meaning Weapon Ten --- was an offshoot of Weapon Plus, a covert umbrella organization designed to create anti-mutant living weapons, starting with Project Rebirth that turned Steve Rogers into Captain America, unwittingly "Weapon I/One"), which Ultimate Marvel then adopted as the source of just about every superhuman, hero or villain, to exist in its setting.
Besides that, another thing that Marvel and Wildstorm had in common was just how often the heroes had to contend with shady government initiatives to coopt or otherwise control them and their powers for more nefarious agendas, like the X-Men repeatedly facing robotic Sentinels and registration acts designed to contain mutants, Captain America having to contest the U.S. government for his own mantle when he refused to go on missions he thought were morally dubious back in the 1980s, and then in the 2000s --- by one of The Authority's writers, no less --- a registration act that targeted anyone and everyone with powers, regardless of their source or origin, and caused a Civil War in the superhero community. Hell, my favorite Marvel/Wildstorm crossovers had Spider-Man in them, Ben Reilly teaming up with Backlash against Venom and one of Backlash's own enemies and Peter Parker with Gen13, given that Peter himself started as a teenage hero, not to mention that the Gen13 crew could be considered in some ways --- mainly the team/group dynamics --- an edgier version of the original five X-Men updated for the 1990s. Come to think of it, speaking of shady government operations, S.H.I.E.L.D. and Stormwatch could have been rival organizations, based on Nick Fury distrusting Henry Bendix as someone who'd go to lengths and cross lines even Fury wouldn't dare, and not for the same relatively noble reasons as Fury.
Which is all to say, I think Marvel and Wildstorm could have meshed better with each other compared to DC and Wildstorm.