I think a score of 30000 is not outstanding, as it is capped. I got a 15k score on a gigantic maso for an alliance win in 1.05. For a military win, you get more points plus you control all the stars so you could expect moe points. Add to that the fact I used rare yellow stars, I think any miitary victory on gigantic abundant maso would yield a very high score.
Now, you 'just' have to beat maso and play the gigantic map in less time than Ray to beat him

.
Here's how I played this one:
Turtle in my cluster to start with. Trade with Alexians who were in the same sector as Sol (lucky me). Then trade exclusively with Arceans to the North. Keep good relations with them, and then my Yor neighbours. Trade techs, get the influence wonders. Later, I culture bombed the Yor and was trying to do the same to the Arceans when there was an event that said 'Arceans are trying to culturally conquer bla bal native influence increased'. No more culture bombing, I had to build transports. Now considering I had allied myself with the Arceans who were the top gun in the galaxy, cleaning up the others was quite easy. Just had to send combat transports.
The Torians were even easier to finish: I proposed peace if they gave me 5 star systems. They accepted. They had 5 star systems, so 5 - 5 = 0, bye bye Torians.
Incredible Torians are still incredibly silly sometimes. They should have surrendered before rather than do that show.