I am not American and I consider America to be preferable to just about any other contender. I'll take the EU, but if China were to ever take the role of the U.S., we are all in big trouble.
Yeah, also not American, but given that the options are the US, the Russians or the Chinese, then the Americans are the least worst option (from my perspective, at least).
I can't speak for the earlier commenter, but I think there is a large gap between what the EU does today and what it would need to do to be a "superpower". It is left to our imaginations to guess at such a future, and so disagreements may just stem from different imagined scenarios.
I don't think the US would be a superpower if the treaties, tariffs, and military control were parceled out to the individual states and each state governor and state assembly decided when to work as a block and when to act independently.
It's just not where the EU is right now. I was at an EU young people summit almost twenty years ago now, and I pointed out that the EU would need an army to stop future genocides like the Balkans. I was shouted down by basically everyone in the room.
I'm not convinced that much has changed since, and you definitely can't be a super power without an army.
Apart from the superpowers, there were also significant political forces that were supporting democracy and social justice. On the other hand, both USA and USSR actively (and succesfully) fought them. I don't see any sense in calling either of the superpowers preferable in this context.
Most of South America would likely disagree with calling us the preferable superpower.