A lot depends on issues such as "Who gets first strike?" (Attacker? Defender? The side with the best warlords, and what if it's a tie?) and "Can a unit attack two targets at once?" (Apparently so; the purple dwagon does so in the initial attack on the back of the donut.)Also, I'm a little troubled by how the game mechanics and unit strengths seem to fluctuate a lot depending on what's convenient for storytelling. I guess they'd have to, but still, wounded or not, it seems a little off to me that all those dragons could be "totally wiped out" just like that by a half a dozen units with just a single warlord.
Well, see the Tool's own interpretation of the matter:
"I thought everyone in the world was coming to kill us."
"That alone is a sign of greatness. When everyone is out to get you, you must be doing something right."