Given that the variants show the possible customisation options available (i.e. with the same hull, any manner of bolt-ons can be fitted), I don't see how the rock/paper/scissor mechanic will actually work.
Not sure it will, some of this game may actually *shock* be down to player skill or even player(s) if it's a multi-crew game.
I have a feeling some players will lose ships against models they really should win easily against, but hell that happens all the time when I play games lol

PS usually me losing.