Not sure of Orelvis off season but perhaps he did play fulltime in the winter back home while Martin and Groshans may have not. BUT YES...he sure as heck impressed!
One prospect for me that has flown under the radar this spring was Riley Adams, while some fans here has talked how Jansen needs to be worried about Kirk, IMHO he should be more worried about Adams taking his job with the Jays. The only outlier here for Adams is he may be traded due to the Jays wanting more of an experienced catcher for the next 3 or 4 years. But IMHO, I would be happy with Kirk and Adams even with the growing pains.