Every appeal to a supreme court is a petition. It doesn’t matter what the subject of the petition is, a supreme court always has discretion to not hear a case. You said so yourself but chimed in that it was “inevitable” it must be heard. Yherefore, you are confused.
The fact is the MS Supreme Court has decided to hear the case and that is a win for McDaniel.
Not in Mississippi, where an ordinary appeal to the Supreme Court is taken by a Notice of Appeal, not by a Petition. Miss. Rules App. Proc. 3(a), 16(a).
It doesnt matter what the subject of the petition is, a supreme court always has discretion to not hear a case.
Once again, not in Mississippi, where an extraordinary Petition for Mandamus, which this, can be granted or can be denied on the merits, but must be decided one way or the other. Miss. Rules App. Proc. 21.