I literally gave you a comparable in terms of how I see Zadina panning out. Being as that Zadina's future hasn't happened yet, giving an example of another's player's career that has taken shape seems like a reasonable model to show this.
This is literally how projections work. I don't understand your confusion.
My take on Zadina is that his development is slower than expected, but I see nothing that tells me he won't still develop into a top line forward. His defense needs some work (not at all unusual for young, offensive forwards at the NHL level). He would benefit by having a better center, and is not at the level where he is going to generate a lot of points on his own. He also will probably get a lot of his points on the PP, and will be more dependant on that then I would like.
My overall take, as I said in my last post, is that he will continue to increase his point total each season, and will become a 60 point player within 3 years. This is a better track than what you see, but is not at all unrealistic.