I would say it doesn't really compare to any of the Star Trek Armada games. It's more 4x like Master of Orion or Civilization (Or Star Trek: Birth of the Federation for an in-universe game). You start with 4 planets colonised, and a handful of other systems that have resources you can mine, but rather than building research stations where you have to spend resources for techs like Armada, you're cultivating researcher 'pops' (population units) to generate research points that let you pick up technologies. And rather than like a single system you're trying to take over, it's a full galaxy that you're having to spread around with. And you don't just blow up enemy ships. You also spy on the enemies (and your allies sometimes), and conduct diplomacy. And there are plenty of anomalies around to keep your science ships busy doing Star Trek-y stuff.