Talk:Bowser and Bowser Jr. VS Dr. Eggman and Metal Sonic/@comment-974403-20170507232507/@comment-30294856-20170508010315

Because of a feat in Super Mario Sunshine that he performed.

In that game, Shadow Mario polluted and cursed the entirety of Isle Delfino. He also has an amazing amount of knowledge on the secret levels, somehow knowing when Mario enters them and where they are. There are also cartoony designs within these universes [there being 10 of them in totality, with four matching the standards and the others scaling] like the train tracks, which provides more evidence Shadow Mario created them. Because their celestial bodies match ours, and because it's seemingly an infinite void, these are full-blown universes that Shadow Mario created. From scratch, mind you; meaning he also created their space-time continuums.

Those realms have a massive amount of stars, so even if you REALLY lowball this, Shadow Mario would at least be Multi-Solar System level, far above what Metal Sonic is capable of. Hell, Bowser Jr. is already superior to Metal Sonic anyway since in most games he isn't too far off from Bowser's power.