Thanks to everybody for the kind words. Considering the skill of my opponents, I went into the game thinking I'd be happy with a draw, so I'm simultaneously pleased and humbled by the result.
The most crucial thing I can point to that led to what turned into a somewhat dominant position over the board is the year 1904, in which I got lucky a few times. Firstly, in the Spring of 1904 I invaded Germany, apparently quite unexpectedly. Germany and I had cooperated a bit to repel the initial British continental invasion and Russia had moved into Prussia, and I assume Germany's expectation/hope was that I would continue attacking England. My position against England, due to unit positioning, was basically bulletproof at that time, though, so I thought it might be safe to just go all-in against Germany. I expected I'd be able to take Belgium and Holland if things went well. They did indeed, with England and Germany fighting for the North Sea, Russia pushing into Silesia, and my armies driving into Belgium and Ruhr with no resistance.
Assessing the board at this point, I couldn't help but think about the two builds that I was guaranteed to get and what I could use them for... and England's unit positioning was such that it was very, very likely that I would be able to take Liverpool in the next year if I just went for it. I pondered this decision for a while, and I honestly almost didn't attack England because of concerns over stabbing two neighbors in the same year... But it actually worked. I knocked back the fleet in the Irish Sea and even unexpectedly took Munich without support. From that point on, although the end was not yet certain, I definitely felt like I had the wind at my back.
As for concerns about whose deserves blame for the lack of a stalemate line, I honestly don't think any one of you ruined it. There were a lot of little mistakes, sure, and I guess some bigger ones... I don't really need to go into it, because I made mistakes too and the only thing separating us from one another is a few lucky guesses.
Good game, all.