I think that the advantage of one hand or another is very subjective. But I would choose A5s for three reasons: 1. when placing on the preflop, A5s has an advantage in
equity. 2. Many people say that QJs has a better chance of collecting a street. This is true, but do not forget about the lower straight with an ACE. 3. Flash. QJs and A5s have equal chances to collect a flush, but with A5s we have a senior flush and we can't lose to the older flush. And with QJs, we give the stack to the senior flash not only with Ax, but also with Kx.