CW is far from empty.
Idk much about EUKO, but I do know when there are loads of people selling out of EUKO to USKO, then it cant be much different.
I've played every server in the last couple weeks. CW is the only one I enjoy. It's not as active as the others, but it maintains a steady activity level which I enjoy more than crowded +10 shelly +10 rappy folk (*Pretty much every other server than CW*)