I last played FAF a couple years ago and only recently returned to discover many changes had occurred through the various patch updates...
Sera/Aeon T3 engys now have 30 build power (used to have 40). Commander T3 suite build power is now 100 (previously 126) and so on...
The database is not up to date with the latest patch and I think I found some changes (i.e. build time of t2 and t3 factories increased) which were not documented in the patch notes but I need to double check this...