Nostromo: Tug, working ship. Designed like a flying JCB. Gonna get filthy dirty fast.
Sulaco: Military ship, simple, functional yet clean and orderly. Military.
Prometheus: Top of the line science vessel, the Alien Universe equivalent of the Enterprise. The latest gear, best tech very shiny, still looks like Serenity.
Stuff aboard the Sulaco: "State of the badass art". No two ways around that.
Also, it's 87 years later... One would think that things like the monitors, at the very least, would have needed to be upgraded in that time.
Plus, the same technology is featured in the APC and dropship. Even if Hudson's comment is ignored and one assumes all the electronic hardware (which would, therefore, have to be getting on for almost a century old) is elderly and has never been replaced, you have to explain why the vehicles it's carrying, optimised for recent combat situations, are meant to be shitty in comparison with what the Prometheus had aboard.
Plus, there's Gateway Station - where Weyland-Yutani and government representatives are present. The Nostromo-is-older-than-Prometheus argument only goes so far.
yeh, logical. i guess we just have to assume it's for reasons like this.
i guess we also can assume the science ship in Ressurection was a older model, and the fact that they where not entirely legal made their budget on the ship a lot more limited?
Other way around, actually. Black budget military operations tend to get a lot of advanced stuff. Especially when they're a project as high priority as the Aliens had been. Doesn't mean scientists at places like Area 51 get billion-dollar toilet seats, but they aren't exactly in poverty, either (compartmentalisation is another matter).
With that said, we don't really know much about the United Systems Military, but the Colonial Marines are clearly inferred to be competent and equipped to deal with most potential situations (and would've probably been OK, if it hadn't been for having their ammunition and grenades taken away!).