There's some disagreement on that. Cruiser is a very wide category in SW classifications. I think Acc could fit the firigate role for Republic as a recognisable ship while Venator or Victory take the cruiser class. I guess you could use more classifications, but basic corvette-frigate-cruiser progression is pretty standard. You just need to classify them by relative size and firepower rather than their official classifications sometimes. Hapes Nova-class battle cruiser seems more like frigate to me, for example. offtopic: Don't forget the TIE Avenger. To quote Darth Vader on cutscene on TIE Fighter: "Hyperspace capability... impressive."