I'm sorry, but you guys aren't very creative. That guy had 650k archers when we started. There are other ways to kill 170k archers, but attacking his walls with 70k archers will never do it.

That player had 7 cities, 800k archers, 50k ballista, god knows how many other troops and millions in prestige 5 days ago...

Today he has 1 city, zero troops, zero defenses, and zero honor. It can be done, and with relatively small loss... just give it more thought. Think strategy rather than expecting to win something large with one single attack.