Wey-Yu and the marines have the exact same technology,
Clearly they don't. The Marines aren't shown having Pups available to them.
You're suggesting with your missile silo example that the only reason the Auriga wasn't upgraded with the latest tech was cause it was produced 257 years ago of A:R, if it was produced later than it would have been a more modern ship with no need for updating.
I'm saying just cos there's new tech doesn't mean it's going to be used.
Where do we see in the Auriga that would need fancy holographic screens?
You say that because A:CM doesn't give the Sulaco Prometheus
-level tech, that this is Ridley Scott
's fault for having more advance technology in a prequel movie. How do you not see how stupid this is?