I think the top level comment is based on the assumption that a greater quantity of objective data will lead to a greater weighting of objective data, and a lower quantity will lead to a lower weighting, leading to a greater weighting of subjective measures.
Likewise, there are many skills you can't demonstrate on the SAT such as Spanish language proficiency. For whatever reason I took the French subject test but no AP test, perhaps there are other schools that do this.
The math score might say a little about the other sciences, but the blmultilingual students are going to be disadvantaged by this it seems to me.