Actually it works on medium characters too, and it works on any stage where there is a wall to hit with the 2nd blast (Asylum, hall of justice, insurgency, Atlantis, Museum, etc). It only doesn't work on small characters. I assume Superman is whats considered a "standard hitbox", right? You lose about 5 or 6% on these guys, but the set-up is all the same.
If so, then you always have the option of doing something like j.2 -> 3xxMB blast b.134 111xxarrow load for 41% and an arrow set-up.
Or like... j.2 3xxMB blast b.134 b.13xxhurricane bow for 46%.
You also can do stuff like 3xxMB blast b.134 f.214 if you have an ice arrow loaded for the first one.
I think I might have a video of one of these. I'm trying to record my stinger set-up right now, which is a really stupidly ambig. cross-up/non-cross-up thing.
Heres an example of one. No arrow, just a load.
This one is no arrow, no load, just damage.
This one is set-up into arrow load, though I probably could've broken about 40% had I went for an ender instead.