That very same italian football expert on Sky (Mina Rzouki or something) claimed that she didn't see the point in Liverpool signing Salah and that he was basically Cuadrado with no end product. So.... yeah.
If you actually want to compare, then just check out their actual analytics. Ignore last season as we wouldn't be signing him for what he did last season, but anticipating him to return to what he was before that. Compare that to McTominay before last season since that was disaster for us as well.
- Rabiot is 76th percentile for total passes completed, McTominay is 57th
- Rabiot is 98th percentile for pass success, McTominay is 76th (Rabiot 54th when it comes to progressive passes, McTominay is 65th)
- Rabiot in the 88th percentile for tackles, McTominay in the 44th percentile
- Rabiot in the 90th percentile for dribblers tackled, McTominay in the 47th percentile
- Rabiot in the 72nd percentile for successful pressures, McTominay in the 28th percentile
- Rabiot 70th percentile for touches, McTominay 59th percentile
- Rabiot in 60th and 55th percentile for being dispossessed and miscontrols, McTominay 17th and 29th percentile
- Above point especially relevant when you consider that Rabiot carries the ball far more than McTominay (76th in progressive carries, 83rd for carries into the final 3rd, 79th for carries into the penalty area. McTominay is 67/66/64 for those, while giving it away constantly unlike Rabiot)
Rabiot is just a vastly superior footballer. He is secure on the ball, he is a good runner with it, he is good technically, he is actually good defensively instead of carrying the illusion of being useful defensively like McTominay who does a lot of nothing defensively.
Again, he wouldn't be the deep playmaker. He would keep things safe, he wouldn't give it away stupidly, pointless, constantly (what Fred and McTominay repeatedly did on the weekend and the last few years). That's what we need out of the defensive partner to the deep playmaker. Of course, we also need the deep playmaker, hence the pursuit for Frenkie. But even if it's Fred next to Rabiot, it's still a massive improvement. Or Eriksen next to Rabiot. Massive improvement. At this point... just be happy we are signing a midfielder whose best qualities are to do with defending and not giving it away constantly.
Also to add - if you look at his time at PSG when he actually played as the DM and not just a defensive #8, his passing stats were excellent. 90's for progressive passes, total passes, etc. Analytics wise looks like a world class DM according to his PSG time as a DM, but of course it's an easier league, more dominant team, different role/system. But he has shown a high level playing deep before, and at Juve showed still good defensive numbers, but just stopped being progressive with his passing (again, might be system though). He's a player who has shown a high level in things we lack at 2 clubs in 2 leagues. One way or another, he's a massive upgrade on McTominay.