So you know how to divide the pie? There is no interpersonal "best way" to resolve directly conflicting values. (This is further than Eliezer went.) Sure, "divide equally" makes a big dent in the problem, but I find it much more likely any given AI will be a Zaire than a Yancy. As a simple case, say AI1 values X at 1, and AI2 values Y at 1, and X+Y must, empirically, equal 1. I mean, there are plenty of cases where there's more overlap and orthogonal values, but this kind of conflict is unavoidable between any reasonably complex utility functions.