I have no stats
but I intuitively believe that 2 x defensive minded CBs will be better for the team. Of course the inference being that Stones first instincts are not defensive.
What is your reason to challenge this assertion?
Obviously it's all opinions and we havent really seen much of funes but my gut feeling is that based on what I've seen, jags is a good foil for stones in that he is a more traditional old fashioned style center half. Jags is good at smelling danger and postionally a better player. He can cover and mop up behind stones, allowing him to play his more natural game. But not saying funes has been poor by any means. Although jury still out imo