With all respect to cuadrado, with costa, you can see the difference between someone who is world class in his end product and someone who is good enough but not WC.
Thats why i say we need another man in the other wing with this kind of workload and results. With cuads, once you get to the 3/4, we waste too many chances because he is all about sprints and crosses, thats it.
Players like Costa and Bernardeschi actually go a level beyond that and are very sharp in their decitions, and have the skill to back them.