Playtime on the server is a factor, yes.
The Asia servers are like a wasteland because the majority of our staff are US and EU-based, so we cannot really watch over them. Adding to that, for some reason the few good Asia jumpers have refused to take up a teaching role on those servers, so aside from what jumpbot could provide, there is no real learning atmosphere there and it just degrades into an idle server with people taunting at spawn for no meaningful reason.