If you have an event Arceus the Sinjoh ruins will be unlocked. This symbolizes
that the Johto people did know about the Sinnoh legends. So why not Hoenn?
Then right there on the SPOT, Arceus MAKES you an EGG CONTAINING either Dialga, Palkia or Giratina of your choice.
So therefore, you think that the people of Hoenn don't know about Sinnoh legends, but you're very wrong.
Yes I have. You can add the fact that Arceus uses Unown to achieve that, and Sinnoh is much more related to Johto conceptually.
You could bring up the whateveritscalled tower housing Groudon/Kyogre in HGSS, but that was more a way to give us accessability to those legendaries than anything else.
I chose Hoenn and Sinnoh specifically in my post, because both of them have their own seperate creation myth.
Both have a set of legendaries representing aspects of the real world, and a story of them creating the region they reside in.
This is clearly contradictory if you took the MYTH (=made up story) serious.
Regardless there is still no argument for legendaries being more than powerful ancient rare pokemon.
It is those qualities that inspired the myths and legends.
There are arguments against it though. Like catching them in pokeballs and using them in battles like any other pokemon.
"Capturing it or defeating it will make this world disappear!"
*player catches Giratina*
nothing happens... Cyrus is surprised.
Conclusion: Giratina is simply the only thing that lives in the Distortion world. It didn't create it and it doesn't control it.