Today I bought a mirror star cruiser via exchange to mirror my star cruiser. However, when I opened it, it looked exactly as if it was a mirror assault cruiser. It says it is a star cruiser, but I don't think it is. Is the mirror ship actually a star cruiser?
All of the 'Mirror' RALH ships are 'flipped'
The MSC looks like the 'prime' Assault Cruiser and vice versa - the Mirror Advanced Escort looks like the Prime Patrol Escort, while the Mirror Patrol Escort has the appearance of the Prime Advanced Escort (including the ability to mount a Multi-Vector Assault console) - same thing with the Recon Science Vessel and Deep Space Science vessels and their mirror counterparts.
They're a great way to make it so you don't have to choose between 'style' and 'substance' - I'm actually flying an MSC right now, I prefer the Assault Cruiser appearance, but I wanted the Star Cruiser's science BOffs over the AC's Tactical ones.