I get that, but Barzal, among others, was considered to be a sure thing at that point in the draft, and Boston passed on him and took a chance on Debrusk and Senyshyn. (Zboril was a logical pick, and I think that he'll turn out to be a good second-pairing or third-pairing defenseman.) I agree that Debrusk looks very good and think that he'll become a regular 25-goal winger. Senyshyn is the wildcard at this point.
there's no need for hyperbole. Barzal was not considered a "sure thing" by anyone. Nobody is really a sure thing, especially in the middle of the first round. There were definitely questions about his lack of size & physicality and ability to stay healthy.
Barzal was definitely projected by the majority of scouting services as one of the best 1 or 2 players left in that 13-15 range, but there's no need to get it twisted and claim that anyone was calling him a "sure thing".
as for Debrusk vs Barzal it should be noted that for whatever scouts had to say about them, in their draft years they had comparable points per game numbers in the same league with Debrusk having 42 goals and Barzal getting the vast majority of his points from assists. Ideally they'd have picked both, but if you're just comparing those two players, Debrusk was in no way a reach.