1: Man and their history is essentially what is in the Zohar (lifeholds), while in Xenosaga higher dimensional beings were, or the ability to link the lower dimension and higher dimension to cast ether (like chaos), space warp like JRs ship is able to do, ect.
2: The failsafe in Xenoblade is linked to the human body, while in Xenosaga the failsafes were chaos and Kos-Mos.
3: The Galactic Federation served to keep humanty alive using perpetual recurrence in Xenosaga, in Xenoblade X the Galactic Federation has chosen to bring humanities extinction.
4: Kos-Mos being a robot aiding humans of flesh and blood in Xenosaga, Xenoblade X Elma is the only flesh and blood body among a civilization of self aware robots.
5: Albedo's incapability of dying and (while this is speculation), Lao's essentially the living dead at the end of Xenoblade X
6: Both were developed under the code name "Project X". No real opposites here, just another thing to show a similarity.
7: Another similarity between the series is Elma's dark skin and white hair (relation to chaos and Mary) as a robot, and awakened she looks like Kos-Mos as flesh and blood.
8: The ability to pilot mechs, and customize them to great lengths, as well as them being a bit part of basic combat overall. This again is only a similarity, but I'm kinda adding them as well.
This is pretty much all I've got as of now off the top of my head. But will add more as it comes to me. Feel free to add anything you've noticed, similar or otherwise.
Last edited by Bigtakilla on Thu Oct 31, 2019 9:20 am; edited 4 times in total