This I axed them guys:
[In Battlefleet Koronus] Table 1-11: Acheotech Components, lists the Power value for the Plasma Accelerated Torpedo Tubes as 2, its’ Space value as 6 & its’ SP value as 2; whilst on Table 1-12 its’ Power value is 1, its’ Space is 4 & SP value is 4.
The Nova Cannon’s values are all different too.
This they replied:
For these two components, use the statistics from Table 1–12: Archeotech Weapons. Those are the correct statistics.
Hope it helps!