Of course, we will have to wait and see. And yes, the same as Ullmark needs to prove himself capable in the playoffs, but that is a much smaller 10 game sample size, not a 9 year career.
I hope for the best for Korpisalo, I'm just saying, his resume does not back up your implications. It's the same talk I heard all of last summer as I complained about the pursuit/signing and Senators fans tried to fool themselves into justifying it despite his poor resume in general. It was fools gold hopes not based on his actual career performance and I'm just saying he has to prove he can be what you say he can be, because he has not been that for the majority of his career.