I don't think the development of TSW can be compared to AOC, like apples to oranges. I think TSW is more complete and has a bigger staff at the "Big Reveal" than AOC did at it's big reveal. They have had 100 people on TSW for about 18 months. That works out to about 2,500,000 hours of work (100 people x 160 hour/month x 18 months).
By comparison, AOC's "Big Reveal" came back in 2005. Funcom had not gone public back then, so the earliest peek we have at Funcom's staff size is in their first annual report in 2006, when they say they started 2006 with 170 employees. At the time, they were working on Dreamfall, the Lost Eden exp of AO, AOC, and of course sustaining AO which was their meager bread and butter back then. So this is a year after the AOC reveal, and they might have been able to put 40 people on AOC. I doubt they had 2,500,000 hours invested in AOC until it was almost ready to launch.