I'd have to agree that I'd don't believe that is a fair claim either.
I've played both games and honestly the only parallel I can see beside them being wanted criminals. Is that the pilot is a feisty woman like Andromeda 6.
The idea of a crew in space is not really a new concept as Hushibe said.
A6 are mercenaries, a line of work that is considered legitimate if somewhat a grey area.
SR are pirates which is against the law, they are commiting bank robberies and theft.
A6 has a more futuristic Sci-Fi vibe.
SR has a more western sci-fi vibe.
The characters are actually vastly different although yes some share the same archetypes, they aren’t matched the same way. Considering you are the captain of this crew vs A6 were you are a stowaway the interaction between the crew already seems vastly different than A6.
The closet thing I can compare SR too is Firefly.
I wouldn’t normally comment but I don’t think its fair to say this is a direct rip off. I believe constructive criticism is important and you are intitled to your opinion, but your comment did come off as somewhat abrasive. Even if you didn't intend it to be.
Perhaps if you could provide more instances of the areas you feel are too similar that might be better.