I haven't even played the game yet, but would that assumption be correct? They seem to have many more useful ships, and a huge variety of builds to take advantage of. Not to mention that they're bulkier in general, and less likely to die from some unlucky rolls. I understand that many of the imperial ships are meant to be more mobile, but being able to be wrecked by a few bad dice rolls seems like an unnecessarily large trade-off.
I really don't know what to think of the Scum ships. I know they're a recent expansion faction, but they don't seem to have any mechanics that stick out. From the quick glance I gave them, they seem like worse Rebels.
It's also an incredibly small sample size, but I've watched a few games between casual and semi-competitive players at my game shop, and I've never seen any of them play anything but Rebel ships.
Is any of this correct at all?