naw, not being dense, just aint one of the people that have to connect religion(especially christianity) to everything....whenever there is a white male savior (even though christ wasnt white), people automatically go with that person being a christ like figure...just cause people do that, doesnt make it so....the movie showed him as a savior, which the character is, that's all the movie did....trying to make him appear like christ is done by people that want to see/believe that's what the movie was doing....
Dude I ain't even a Christian so from my perspective it' all just stories and as it happens, the the most prominent messianic figure in Western culture is Jesus, thousands of films have made oblique references to that over the years. Siegel and Shuster the creators of Superman were actually using Moses as a frame of reference but by that same notion drawing attention to biblical allegory is not a stretch by any means.
as for zod: he was a good villain cause they needed an actual villain and his setup was already there since the movie showed how supe got here from krypton....MoS really did tell the story from the beginning, and not just show supe on earth already, with flashbacks of what happened....they were setting up a completely new take on the character....but since you think he was such a bad choice, who do you think they should've used as a villain?...
There are plenty of actual villains and most Superman origin stories do start in Krypton but that doesn't mean the villain had to be Zod
You need to understand that the idea of Zod's mutiny and imprisonment happening right as Krypton was being destroyed is something was something completely new that the First Donner movie introduced as a setup for Superman II (they then gave Superman an entire movie's worth of set-up before he had to deal with Zod) and obviously their intention wasn't to ape that movie so they could have done things differently.
There were plenty of options, even if they were intent on saving Luthor for the second movie,
If they wanted to play the Kryptonian history angle they could have used Braniac like Superman tas did. His powers are a lot more scalable than Zod's.
They could have used a Bruno Mannheim under the control of Darkseid which makes a great setup for a sequel
If they wanted a galactic threat that wasn't directly related to Superman they could have used Imperiex.
If they wanted an earthborne threat but still wanted slugfest they could have used Parasite.
(I don't think Doomsday works at all in an origin story for similar reasons to why I didn't think Zod worked.
I mean I'm just chucking ideas around here but lets not pretend the only option they had was to use Zod.