One of the biggest differences between Poirier and Shinkaruk that nobody is talking about... Shinkaruk's production actually declined last year. That's a big red flag for draft eligible players. The last highly regarded CHL player to regress in his draft year was Angelo Esposito, who also fell dramatically and busted huge.
http://www.coppernblue.com/2013/6/10...ft-comparables
Contrast with Poirier whose production increased dramatically over the past year, which is what you want to see.