Thing is what is equated to as a build order at lower levels is the ability to get 3 factories up without stalling. It's the basic shit that can almost be applied universally regardless of map with very slight variations needed. It isn't 1k players that are losing games because they failed to reclaim the rocks on the way to grab the back mexes on open palms. They lose games because they failed to notice that Syrtis Major has a gigantic civ base in middle with 12k mass in it.
The former will still not be deciding games on premade or random maps. The latter will decide games on premade or random maps.