But i am completely convinced by him now, despite his team struggling in the Bundesliga this season, he has still managed to score 10 league goals up until now, which isn't that bad at all
10 goals and 5 assists on 21 match isn't a particularly good record. Especially if you know that it's a high scoring league like Bundesliga and if you compare it with his last year record of 26 goals and 10 assists on 32 Bundesliga matches.
But numbers lie, especially in leagues like the Dutch one or Bundesliga, where lots of goals are being scored.
If you follow the players though, then you don't need numbers to see how good they are. Dzeko doesn't need numbers to back his quality. It is obvious from the way he plays and moves that he can make it in any team. It's a rare thing, and a very precious one, to have such a big and strong striker who's so fast at the same time, has great ball control and scores from every position.
Still, even this year Dzeko's numbers are far from bad. Maybe he's not having a great season in Bundesliga, just like his team, but in Europe he's been really good. He scored 4 goals on 5 matches in CL (2 against Manchester, 1 against CSKA, 1 against Besiktas) and 1 goal+ 1 assist against Villareal in UEFA.
Add his 2 goals and 1 assist record on 2 matches in the German cup and you get that even in a not so great season for him, he still has 17 goals and 7 assists on 30 matches. He also scored for his NT this season (I remember he did against Spain).
The boy will make it and he'll shine wherever he goes. It won't be Juve, though.