It could be. You can ID it for sure when it blooms.

Leaves of superbum are more covered in farina - whitish dust-like leaf covering. Did you rub yours off or there wasn't any? It shouldn't be rubbed/cleaned off - not easy, as any touch will do it :) It is there for a reason (to protect leaves). Many (not all) succulents have it. Plant will not die if rubbed off, but may look as it should be and as I said, there is a reason for it. Few of mine - with some marks on farina:

If you don't mind me mentioning, plants seem to be too much inside the pot. They would look better if raised (use more potting mix). Mix should have as little peat as possible in it and be well draining. Also, it is better for air circulation, especially if there are many plants in same pot. Other plants in there will likely grow faster, and pot could get quite full, quite fast.

It went through quite a tumble through the post office system which likely rubbed off the farina, since there are a bit remaining in some parts. I got it for free and living in one of the best zones for succs makes it so that having it recover over time won't require too much effort.

Haha you also got me on the awkward potting... I ran out of soil and I ended up settling with a quick mix of stuff I could find within arm's reach, e.g. dirt from a veggie garden and all of my remaining perlite. I've been trying to avoid perlite because it's so lightweight but I'll put up with it for now until our shelter in place is lifted. I also prefer having each plant in its own container so I'll be repotting eventually, but I might avoid moving them too in the next few weeks to let roots develop.

The hope is that if I can get this one into shape (like yours) I'll be confident enough to get a variegated one, which would be a bigger investment (like, $60 for one head from what I've seen...).

Time in transit can cause some damage. I am sure your plant will recover. Farina doesn't re-appear once rubbed off (or very seldom & it takes long time), but new growth should have it. Garden soil is not the best - but you have to use what's available I guess.

I understand about perlite - lots of ppl say the same. I use it all the time since I can't get pumice. Even that is quite light. I use sifted perlite because it helps drainage and because of it's light weight! It make pots lighter. I buy it in bulk and use for all pants (even non-succulents). But I use also chicken grit in my mix (no soil), and that adds weigh. I also use grit as top-dressing, so it doesn't fly away.

Plants in the photo (and few more I have) are all grown from leaves and separated pups. As it gets older, stem can get bit longer. Many ups grow from roots and some may grow along the stem. I have one (probably 2) like that. They needs to be beheaded soon.

Since I am in colder zone, many plants have to spend about 6mo indoors - I keep them under lights, otherwise they would be awfully etiolated.