I believe he's asking if it's possible to use modified ROMs on other emulators like SNEmulDS.
Short answer: If you can play the original no problem, the modified ROM (Super Demo World excepting) should in most cases run.
Long answer: It's really hard to tell given that the ROM is modified so much but considering that the emulator doesn't have game-specific settings, the game will in all likelihood run, though with the case of some games adding content or being so large in filesize, that likelihood drops. Emulators are generally better in terms of PC anyway since they are optimized for said system, but on either the DS or PSP they're fairly weaker and you won't get the most power out of them. There might also be limitations on how big of file that emulator can use, I can't answer that seeing how I don't even use it myself (then why am I answering, I know).
Unless you're on a painfully-slow connection or are otherwise lacking specific hardware, there's no harm in trying at all.