From my perspective, a couple other lessons-learned (for VRWC, me, or both of us):
- Don't start in a frigid tundra.
- In trying to hem me in, you stretched your defensible territory around mine, giving me the advantage of interior lines of communication, and more to the point moved you to the top of my list of civs I must fight to the death.
- Chop. Chop some more. I don't know what you were preserving the trees for (particularly in Lizzyville) post-mathematics.
- Don't attack out of cities with defensive units, they have substantially better odds if you leave them on the defensive.
- Two against one is ultimately costlier and slower (though still a victory) than four against one.
- Plan for bad RNG results, but don't plan for awful results or you'll miss windows of opportunity.