Yeah, that looks about right. Heres the specifics on the shielding and weapons for the ISDI and ISDII: ISDI HULL RATING: 2272 RU SHIELD RATING: 4800 SBD WEAPONS: -60 Taim & Bak Heavy Turbolaser Batteries; -60 Borstel Ion Cannon Batteries; -10 Phylon Tractor Beam Projectors ISDII HULL RATING: 2272 RU SHIELD RATING: 5760 SBD WEAPONS: -50 Taim & Bak Heavy Turbolaser Batteries; -50 Taim & Bak Heavy Turbolaser Cannons; -20 Borstel Ion Cannon Batteries; -10 Phylon Tractor Beam Projectors (Don't ask what RU and SBD stand for, I don't know. The numbers give a good comparison though) Simply put, the ISDII has better shielding and more powerful firepower. For further information, check this site: http://www.hyperjump.net/swguides/sdguide/isdstat.html