Is there a difference between mortal and immortal intelligence? [Spirituality & Religion]

Yes. In my opinion, when we are uploaded into the universe, our knowledge and and capacity becomes all encompassing and unlimited, for those who 'graduate'. Buddhism calls it, "becoming truth".

Mortals exist. Or do I misunderstand the term?

Mortal must calculate and immortals just JUMP. They're not gonna die or nothing.

The first one dies. The other one isn't a thing.