The prosecutors certainly cared who testified when they dropped Karen McDougal from the witness list after Stephanie Clifford's disaster of a testimony.
And they must have had doubts about Cohen's testimony if they brought in rookie New York Democrat Congressman Dan Goldman (who represents Brooklyn and lower Manhattan) to coach Cohen's testimony.
-PJ
If the prosecution had doubts about Cohen, then they intentionally sabotaged their own case by putting him on the stand.
No, they didn’t have doubts. The fact is the prosecution failed massively.