The briefing calls it the GTA Monitor(and I don't think they'd send an AWACS to hold off an attack

), so it sounds like they hadn't completely decided what it was going to be, until the mission was already finished.
In light of that, I'd wonder if those two lines, being also identical, were more or less placeholders, whether they were actually correct numbers for a cruiser or not. Not that I'd dismiss it outright, but I'd take it as a secondary priority to any other sources.
The fact that the Orff is only crewed with 'dozens' seems kind of hilarious, though(technically correct, as long as there are more than 23 people on board).