Sales Q3 2023
GW2 sales appear to be almost unaffected by the SotO release (2023-08-22) . Not looking good.
Sales Q3 2022 for comparison
EoD release (2022-02-28) was in Q1 2022 and sales didn't significantly increase before Q2 2022. Similar to PoF (2017-09-22) where it also took until the next quarter (Q4 2017) for sales to really pick up (almost 35K million). So maybe there is hope, i. e. how many people did you tell that they should buy SotO after you have played it?
Source: https://kr.ncsoft.com/en/ir/irArchive/earningsRelease.do
I mean, it's not like Soto is some sort of new beginning or revolution to the game, and it definitely does not give much staying power with the casual crowd, let alone the hardcore one.
At least GW2 is doing better than Aion, though not by a lot