Generally the earlier you develop infrastructure on planets - the better.
ts unclear from these later saves what his early tech order is. Based on the similarity of our positions on t70, I have to think that Cloning first or Supercomps first are very close to each other in value
Of course clones go the first, this goes without question. The aim is to maximize pop. If you swap supers and clones in tech path in the end you get about the same timing for getting both of these techs, but your pop will be much less.
When you go for clones first then your pop is increasing faster and you research super computers faster too, due to higher pop.
Finally, he fills his Rich worlds with non-androids to have production centers (which i didnt do in the save I posted, but I did do in my MP games), in order to build his BBs. This is definitely better than having no strong production worlds.
Right. Riches are important for production strategy. For best efficiency each of the rich world should be used solely for production. Researching or farming on such worlds is ruled out.
Comment on android farmers. Android farmers could be chosen in several cases:
1) for a map, in which you have greate reserve of population capacity;
2) Your race is -food and efficiency of population is suffering;
3) You are rushing and you need an edge for speeding things up: pop growth->research-> production. It's more like win or die strategy, since in longer run you will be missing pop capacity and will be outperformed by a player who won't be missing it.