I've also experimented with Metaverse scores.
Played a game (Challenging, Huge) till I was 3 turns from a Tech Victory. Saved. Also positioned fleet around Planet of a LAST major civ for a Military Victory. Disable Cultural victory (as would have achieved this long ago).
Attempted Mil victory first - gave 15,000+ scores.
Reload same game and advance 3 turns for Tech victory. In that 3 turns, nothing much change except pop growth, eg. no starbase gain, etc.
Tech Victory score was a paltry 5000+. The difference is way too large, IMHO.
Notice that top players in Metaverse usually win by Mil - I now know why.....