Beto and Keane are very different, IMO, not at all the same style. Maybe Sa or Joao Pinto have the same function of Keane, but Beto? He does his work in midfield, but he's more of a pacifist compared to Keane and the Pintos.
remember Tonito? ex Sporting, and Boavista - he was a killer. guys use to jump like they had a finger up their ass Paulinho Santos and Frasco ex Porto were not to far behind