It's ranked because you actually needs to think about different combos in different teams including synergies from different lineup to different teams. Sure, the targeting *s, but if you establish good team synergies with good enough equipments and upgrades, then you'll have no problem anyway.
If you lose against one lineup, then just tweak your own lineup and re-challenge again, simple. Having controls in ranked is a disaster, since everyone can just advance to rank 1 if they can actually control their team. It's just like an easy mode Survival Trial.