Feddies and their autocannon-lovin'. You know the drill.
...Hell, it's a wonder they didn't mount a wad of ACs on the Sagittaire, now that I think of it. For shame, FedSuns! You could have built the Malice decades sooner than it actually debuted! ;D
If I remember correctly, the Robinson built 'Mechs tend to be based around energy weapons.
Ostsol,
Watchman,
Sentry and the
Black Knight. With the
Argus coming alongside the
Sagittaire, but it has autocannons. But one could argue that might have been due to those people at Achernar (Some of the variants have a far stronger energy weapon focus)
I always felt that this different in main weapon type focus was a neat little thing. I do not know if it is intentional or not, but I think they should stick with it in future products to promote the whole diversity thing.