I think he has a couple of key attributes spot on. There are other players that lack core qualities for a defender, and appear very polished in some outside stuff, with some nice decoration over a shaky foundation: case in point Bartra.
This guy has great character and leadership qualities. Not scared, top mentality, always going hard. Very Ramos-like, a player very used to making errors in his early days, but compensating through leadership, guts, dedication.
Right now, with everyone fit, I'd opt for Pique - Mingueza for CB. Araujo will not make it based on physicality alone. He needs to be quick and work on his technique, it's way subpar. For any modern team, not just Barca.