>>35274688I don't know, just from their designs you can see the inspiration pretty well. Reshiram is the naturalistic, traditionally designed Dragon suiting its role as representative of the Hero of Truth, one who sees and accepts the world and what it is.
Zekrom, on the other hand, is more mechanical and modern in its design, showing the crux of Ideals to be shaping the world to one's outlook even if it can be at odds with objective reality. A nice little nod to that is shown in how Zekrom's irises aren't the same color as its sclera like Reshiram's, showing the break.