Here is what I post any time anyone posts a "Prime vs. x, who wins?" thread.
SUPERBOY PRIME beats almost anybody. Here is why:
Not strong enough. Earth-2 is a Pre-Crisis Kryptonian, in the fact that he's a Kryptonian from the original DC multiverse and existed prior to the Crisis.
Geoff Johns portrayed E2 Supes more to his very early golden age power levels and not to his hurling moons COIE power. SBP got Silver Age Supes treatment.
SBP said his Krypton was superior in IC#7, and I have no reason to disbelieve him with the way his power levels are.
You mean when Prime first escaped the heaven dimension? Was it not only for that?
SBP was shown without much in the way of power in IC: Secret Files and Origins. When Alex gave him the anti-matter upgrade, SBP said he felt much stronger and smashed his way out of the heaven.
It could go either way on this.
In addition, I wouldn't go so far to say that he's absolutely invulnerable to magic. It'd be safer to say that he has a high resilience to magic.
He has stated that magic doesn't affect him, and magic has yet to affect him. Again, there is no reason to not believe him at this point.
Pariah is a pariah. He was dead and resurrected on clutter earth. From a certain perspective, that would make him from clutterearth. I dunno. But SBP said he was "The last son of the multiverse" in GL.