Not so much that.
The thing is that this system of football is particularly hard on the wingers/forwards. They are asked to do alot of dirty work, such as press defenders, help out in defense when necessary, run ALOT, and using tricks the way Neymar does is discouraged by the coaching staff. Wingers are not encouraged to try and dribble past defenders all the time unless it is an absolute certainty.
Established World Cup winners like Villa and Henry had to come and adapt their set of skills to that system and it took them a while. These are players with serious credentials to back up their reputations. Alexis Sanchez has had similar problems adapting and many here have called for his head the same way they were doing with Villa last season. And anybody who has seen Alexis at Udinese and for Chile, knows that he does have great dribbling skills and is fast. But he plays a dark role much like Villa and Henry have done for us, only difference is that those two have an eye for goal, whereas Alexis isn't a natural goal scorer.
The pressure will be the likes that Neymar has never had to deal with before. Even if he was handed a starting spot on a platinum platter, he would have no guarantees to keep it if he does not perform. Pep had no problems benching Ibra for Pedro and Bojan as soon as his form started to dip(Not to mention his attitude). We're talking about Zlatan, who has walked into every starting line up whether he deserved it or not, and still started not matter how good or how bad his form was. Neymar in Brazil is the same in that he's practically royalty down there and has been given everything. The kind of pressure he would face makes players mentally exhasuted and afraid, and that anxiety causes all kinds of things like messing up simple passes, missing one on ones with the goal keeper, and being out of tune with the team. It has happened to the likes of Villa, Ibra, Henry, Cesc, Pedro, and Alexis.
Neymar is just 20 and with no experience in high pressure situations. He won't have it easy here.