Infinity has things that can bypass it and requires the user training to stop certain things while untouchable is automatic and far more deadly and is a much bigger pain in the ass to deal with for the user.
I think Untouchable is stronger since it can cause actual damage while Gojo’s works like a barrier you can’t enter and needs surroundings to be used offensively plus Gojo’s barrier can be bypassed using some methods, I don’t know much about Untouchable (I’m on episode 3) but I don’t think anything is getting to the user with the power system I’ve seen so far
Untouchable is way stronger. She can even increase the range without it losing its potent effects. Even Mahoraga himself would find it impossible to get through it. Negators can also increase the level of power they have by viewing their powers in different ways. So it isn’t really a struggle. Most negators could solo jjk seriously I’m not even glazing😂🤣