I just finished my first game where I got over 1 million points.
Congratulations on being the first to achieve a 1 million point game. AFAIK you're the first to do so. I've come close (957K) but that was with DL. I know Magnumaniac has a 975K DA game which is now 2nd.
I'm still playing DL for a couple reasons one of which is that I'm still convinced I can reach 1 million points in DL. Anyway I think I have a good shot with my current game. I do have no doubt that I'll easily be able to get over 1 million once I do move on to DA though.
However the point of this reply is not just chest pounding. Primarily it's about the relationship between the various victory condition types.
I had a smaller game awhile back that I was able to win on about the same turn (i.e within two turns) in all four of the different victory conditions. The reported game length in all cases was 7 years so a two turn difference isn't very large, but it was a small galaxy game which makes the scale somewhat different.
Anyway based on that game I got the following ratios of scores between the various victory conditions.
Beyond Mortality = 1.0
Political Victory = 1.2
Cultural Conquest = 1.4
Military Conquest = 2.0
This data is detailed in the Score dependency on victory condition
Basically I found that if you could do things pretty much the same a military conquest was worth twice that of a tech win.
Your results suggest closer to a 3 to 1 ratio although you mention a hard cap on the Tech win which at the score levels I was looking at I would never see.
I believe that the tech win score really has nothing magical to do with the Tech component of your total score. Basically I am pretty well convinced that the 4 components of score (income, population, military and tech) are treated identically in all 4 different victory conditions other than the overal multiplier to score that applies to the different victroy condition.
However an overall cap on the score of a tech win could be present and would account for the difference because based on everything else I've seen, even though your tech spending stopped your total score sould still increase due to increasing military even in a tech win.
So how many ships did you end up building and did you do a final upgrade of your 1/1 fighters to BHE/ZPA dreadnoughts?