Played the battle.
The battle is obviously heavily scripted, so it's not possible to get an impression of the AI.
Units move incredibly fast - too fast for the battle to be playable and fun for an old fart like me. :-)
Combat is over in the blink of an eye, too.
I feel like I'm getting too old for the TW series...
Or just too old in general ;-)
Ran reasonably well, though, on my mediocre system.
I can see already now, that I'm going to miss the unit variety from Medieval 2 (especially with mods).
But it'll be interesting to see how moddable Shogun is.
Good mods can save any game.