And in order for that system to work he need our wingers to babysit the midfield.
Also if your going to use that sort of logic then Marchisio was co regista as Pogba and Vidal ventured forward far more often than Marchisio that season.
So looks like Marchisio as a CM and Regista is levels above Pjanic
in 5 knock out games before the final, Pjanic averaged 3,8 tackles and 2,2 interceptions, as a supposed weak defensive player. as if 2 wingers would hold down the midfield on their own if the mids are soft

they were defensive because we had 2 attackers that didnt do nothing defensively, so unless you want us to defend with 6 players against barcelona and madrid, in which case youre crazy, they have to defend deep.
co regista

Marchisio was a btb, joining the attack, providing width and covering the right flank. defensively, it was Vidal who covered Pirlo. Marchisio had nothing to do with being a regista when Pirlo was playing.
Pjanic as a CM had a 12 goals and 12 assists season, at Roma. he played a CL semifinal with Lyon, being one of their best players. but sure thing, Marchisio with 3 elite seasons in his career is levels above