Originally Posted by Yami-Yagari
I'd say go either siege towers or ladders. Frontal gate won't work, seeing that their ranged units will mow down plenty or your troops in the process. Best to take siege towers, since they have more hp then regular siege ladders. And now just some, but talking about like 15 or so (maybe even more, like 30 if its possible). Then you'll be able to overrun their walls with ease, without having severe casualties by arrow fire.
Or, rather, having some severe casaulties, but having enough towers anyway. Think: a good human player would focus his firepower to destory as many towers as possible, not spread it out over each one. AI might do that. But, then again, so might poor players.