You do know that most rookie/young pitchers struggle for a couple of years, right?
Except that hasn't been the case lately. The truly good young pitchers of the last 3-5 years have came up and dominated right away. I think that is why folks are so quick to dismiss guys that struggle early.
For what it's worth, I have a lot of faith that Wisler will figure it out and be the MOR he was touted to be. His stuff is a notch above guys like Gant and Whalen and Jenkins.