I just read an interview with this year’s campeones, Daniel Nacucchio & Cristina Sosa (congratulations, and nice to see Neri & Yanina did well also :-) - Well, he quoted old milonguero wisdom:
El que menos hace, a veces es el que hace más
Which means something like, the one who does less, sometimes is the one that does more. (Forgive my translation, neither Spanish nor English is my native language). Exactly.
PS: The interview was in the excellent B.A. Tango, which you can subsctribe to by sending an email to email@example.com with the subject line “Suscripción”.