No, the 3-5-2 didn't exactly work out too well for them despite achieving a third place finish. It was a mixed success to say the least with Van Gaal only changing it when the Netherlands were in a desperate situation but otherwise, he stubbornly stuck with the system even when it's not working. In the case of United, one could argue that they have better players than the Dutch, at least offensively anyway but once everything settles down for them, I would like to see if they are still THAT bad or will do much better. They do have some good players after all.