Are you confusing Lamela and Bergwijn here?
I really do feel Lamela has shown what he can do in 220 apps for the club vs Berg's dozen or 2.
No I am not a great number off those appearance's were as a sub. Lamela has mated 223 appearance's for a total of 12479 minutes which shows he has missed nearly 8000 minutes if he would have started. He had 2 seasons in which he played just under or just over 3000 minutes season 15/16 which he played 44 games he scored 11 and assisted 10 and 14/15 which he scored 5 and assisted 10 . The 14/15 season was really like his first season as he spent a lot of time injured. Then you can see he picked up and had a very good next season but then after that he only managed 944 minutes and the rest of the time he never appeared for more than 2000 minutes . It shows if he is given a run he can perform he just cannot get a run through injuries or not being given a chance