Sure, but you think the World Cup and the Champions League aren’t physical competitions? I get where you’re coming from but when Pep came to England people said he couldn’t win playing his game and lo and behold he went and smashed every record in the books playing his game.
Fernandinho isn’t the tallest or strongest fella but is arguably the best 6 in the game and is doing better than any of our other fit centre backs filling in at the back.
The guy is 5’11, not a 5’3 Lorenzo Insigne. If Pep didn’t think he was physical enough he wouldn’t be at the club, let alone in the first team squad.