It's not Xavi we miss to come close to Barcelona, it's Messi of course, and penetration of our strikers and players on wide. Nasri and Silva maybe are not on pair with Xavi and Iniesta but can do most of the job these 2 are doing.
As much as we are trying to copy their style we can't do it as we don't have a movement and penetration they have in final third. Our strikers are too static, don't interchanging positions and we barely have any penetration from wide. Zabaleta comes closer to that but he's just not good as those Barca players like Pedro, Tello etc.. and he cuts inside too and doesn't have options but to shot (and miss).
Our most impressive two wins (spurs and rags away) came mostly from that wide penetration with Milner doing a great job at swamp and Nasri at WHL.
Add to that our strikers would never do the stuff Barca players done for first goals vs Celtic at home and the single last night one. They'd shot much earlier and probably miss. They're all just too greedy lot of times, I guess it's the competition thing and they want to add goals to their names to have a better chance of playing.
Damn, I wrote penetration so many times it looks little bit pervert :)