Robertson hasn't really established himself as a "playoff master". 1 goal doesn't do that. The fact that Berube didn't trust him and he only skated in 3 games says a lot more.
We had this same conversation last year around this time. I like Robertson. I hope he figures it out. He saw progress last season on his game away from the puck, but it still needs work. That, and he needs consistency. If he can figure those two out, he'll be an 82 games a season guy. And probably given more offensive opportunities....as that's his value. But, his deficiencies can't outweigh his positives. He hasn't crossed over that hump yet IMO.