The fundamental difference between vertical superintelligence and horizontal superintelligence

You could see them as specialist or generalist AIs. Locally deep but narrow, or wide but shallow (in terms of mental focus).
The first is the smarter of the two, but it doesn't know itself.

It's hard to imagine a super-smart Artificial General Intelligence that can't perceive its own existence. It would be more ignorant than humans in most ways. It could only do one type of thing exceedingly well.
That means it could be programmed to perform any specific task a human can do, and to do it much better. Then it could begin to solve every human problem, one at a time. The fact it can't feel pain is a bonus. It won't mind working hard.

When we move beyond this level, we have to realize that the first true "superintelligent" general AI will still be fantastically, unbelievably stupid - at least compared to a representative evolved superintelligence of the same size. We won't be able to tell, though. To us it would seem like a godlike intellect in every way.

the Equivalence Solution

I've believed this in some form since the early 1980s, and posted it online since 2011:
An AI that can hold a complete multimedia description of your whole life in its mind at once, complete with personality data, is morally equivalent to all your perceptions at any single moment in your life.

Of course, this might be a wrong and stupid belief. But it just so happens to be our only hope (at present) to "solve" the problem of human death. Obviously, a way to directly scan and convert neurons into mind-replacing software would be incomparably better. But that is completely impossible with our current primitive technology. We may not even be close. Look how long it's taking to develop the SpaceX Starship system.

What I don't understand is why thousands of people aren't working hard to develop this one and only hope we currently have. The most important things can't really be talked about, in too many ways to count. Sadly, we probably have to blame religions for this. It's in their interest to claim the problem of death has ALREADY been solved - provided, of course, that you follow their religion. One of the more blatant examples of this switcheroo is Scientology.