Yea.. but then you get to play the "Is the player ship OP? We'll find out when the dice drop!" game. I don't like that game. Or.. vice versa.. "Oh. I DID blow you to pieces in two shots. Huh. Bad guy was a little too high. Wish I had creation rules."
"I don't know, how would you really know how X would perform..?"
"Manuals? Peer reviews? Tech specs? Experience with similar displacement craft? Familiarity with the production team's other works/design family? Ability to carefully work out it's performance arc without risking everything on a "gee if I can't pull out of this dive I'm gonna die" moment?! Does the term Expertise
Sure if it's a prototype
than we're really throwing the dice, but otherwise you really can tell quite about a book by it's cover -if only because the cover will tell you something about who that story's expected to sell to, and by extension what that audience hopes to encounter.