@Sigoroth Hilariously, FFG follows the canon better than GW's own codex's. Read Drago's codex entry if you want a good laugh, because technically it's cannon.
Grand cruiser model has 4 hardpoints a side IIRC, yes? FFG has it at 3 component equivalents, which is closer to what the faq 2010 era stats put them at. Which one are we going with.