I hope you don't take this as an attack on you, but rather as some friendly tips - I've been playing this game for a very long time, and you're (relatively) new? So happy to pass on some information.
I'll happily elaborate more
i'll respond to your message properly tomorrow when i'm done with this uk1 chaos, but as it looks like you aren't playing uk servers at all(especially you weren't part of this uk4), so your response now looks very condescending and is probably here so you can have fun watching responses (like most of mines are also). But for now i'll leave you with this, most hammers on uk4 are below 10k cats, and they are all capable of shaving off 10lvls of WW when it's on lvl90, even with unique artie due to very low deff numbers(under 1,6mill). So there is no point in hitting GW which takes 84h like you said when you can have 10-15lvls of WW which take atleast 100h to rebuild. Yes you can hit them with smaller hammers after proper WWKs, but that wasn't the case here, it just looks like they were hitting with smaller ones when in reality those were their WWks. And please don't take this as a personal insult to your grand knowledge of travian, i'm just here to give you some info about actual server. So please message me if you want any additional data, i'll be glad to provide.
Anyway, i'll quote most of your response tomorrow and elaborate.