Nani was mostly inconsistent and frustrating when he was on the left. He was always more consistent on the right, highlighted by the only season he was given a good run there he was the best player in the league, led us to the title and was battling with Di Maria to be the best winger in the world not named Messi or Ronaldo.
Unfortunately he spent the majority of his time with us on the left because Valencia could only play on the right. As much as I like Valencia I've always felt that was one of Fergie's biggest mistakes in his latter years. Sacrificed the better player to try to get them both in the team. In hindsight perhaps the best thing to do would have been to move Valencia back to fullback earlier and let them both play on that side together.
But I'd disagree with that, when Nani was on it, he was fantastic, but even former team mates have said what I posted, it was commonly commented on at the time as well. No matter where he played he was the same, right or left. Yes, he provided assists and goals, but aside from all of that he let himself down a lot by being selfish and shooting when he should have passed, trying one trick too many, his diving and play acting. He could be excellent and frustrating in the same passage of play.
I was just using him as a reference point
for Diallo, even with all those flaws I'd be happy if he reached Nani's level, that is all.