I think Hunter would crack faster. But Joe might forget where he is or what year it is.
They will both plead memory loss
I dont recall
I cant remember
Etc
Waste of time for both.
Let Joe explain his threat to hold a billion dollars in loan guarantees, let Joe explain why he wanted the prosecutor investigating Burisma fired. Let Joe explain how Hunter received billions from China.
Hunter won't have these answers. Calling him to testify achieves nothing ... and will make poor Joe look like poor Joe.