Can’t really give a reference, since it’s based on the actual models. There’s a model viewer available for WoW which allows you to see the tri counts for the models. Base models were around 1300 poygons to 1500. Armor varied widely, and I don’t have the expansions just the free version since I’m not much of a player, so I can’t speak for any newer stuff which might be higher quality. Still. the average gear only added another 800 tris or so, making the total around 2k.
I’d be interested in seeing if any of the newer stuff has higher counts, but judging by the screenshots I’ve seen, they’re still relatively low detail meshes. Anyway, further thread deviations I’ll post in the new thread you created.