Maybe, but you were responding to someone who simply specified "a legal emulator."
There are tons of legal emulators - every single emulator not containing original, copyrighted BIOS / firmware code (or unlicensed games).
Not the same in that you seem to want to paint this decision as an arbitrary vendetta by Apple against emulators, when it is obvious that the apps you are describing would bypass both the iOS security model and the App Store business.
1. By this, you yourself admit that Apple don't allow emulators simply because of business reason - they want to maximize their profits and emualtors, allowing for running hundreds of (thousands of) legacy games, is a direct threat to this. This is why they don't allow emulators capable of executing arbitrary code.
2. if, on a non-JB'n device, you can't run JIT or other goodies available on JB'n devices, how could even an emulator get out of the sandbox? How come Microsoft, which are at least as strict WRT their sandbox, do allow
all kinds of emulators in their store? (An example:
http://www.wpcentral.com/emipsx-review-playstation-emulator-windows-phone ). Is Apple's refusing to allow emulators indeed because of "security" reasons? I really don't think so...
And you drop in some misinformation about the legal issues as well.
OK, I didn't specify you are supposed to dump your ROM cartridges. However, when I talked about grabbing your own floppy disks or cassette tapes (as opposed to building / getting cartridge readers to access the contents of proprietary game cartridges) for other platforms, which is far easier to do with simple means, I was certainly right. And, "strangely", emulators of those platforms are also a no-go for Apple. "Surely" for copyright or security reasons, yeah, sure.