Okay, I promised an in-Depth analysis. Well, here is the main point which Arides also agreed on - I won because of heavy placement errors. Check the placing of the Trencher Rain DoomTrain, and the trencher cannon. Keeping in mind that Arides went first, it would have been gamechanging if he had just swapped their position. The Kayazy would've been toast - at least I could not have gone as deep as I did. That's a lesson worth learning about placing. The TRDT could still have fired on everything that came up on the hill. And... stuff. ;-)
When I do this next time (which'll probably in issue #39), I'll also prepare an explanatory picture.