are you even serious
this would not be some ignorant bullshit if you were 2 years old and thought that real life works like fifa. but even in computer games you can't play the same season with the same squad - let alone the same season with two, completely different squads. you completely ignore that coaches don't work in a vacuum and squads do matter
even sarri admitted that his scudetto winning team was in the last year of their cycle. and the team that came after his didn't have pjanic, ronaldo (he stayed for an other year but left when allegri returned), dybala became a hack thanks to sarri rushing him back early from injury, chiellini was semi retired from serious football, etc
let's suppose coaches aren't idiots for a second and they want to play the best team that's available. here are two derby d'italia teams from sarri's season and this season:
now tell me with a straight face that you'd expect the same result from both squads. for me the old squad was stronger at almost every position. i'd only replace berna with chiesa, matuidi with rabiot, and de ligt with bremer in general, but since it was a 4-man backline with maurice, de ligt fits that better.