Why is it "hopefully equally?" I'm not convinced a system that gives Grande and Eilish both $1 per stream on $2 revenue is inherently better than one that gives

Why is it "hopefully equally?" I'm not convinced a system that gives Grande and Eilish both $1 per stream on $2 revenue is inherently better than one that gives Grande $1.50 and Eilish $0.50 from $2 revenue, or better than one that gives Grande $0.10 and Eilish $0.05 from $2 revenue.