I don't see the point in asking "Is there a chance of emulator ______ on 3DS?". There aren't many people inclined on investing their precious time to code emulators for the 3DS, let me tell you. So while it's possible, it would probably take a long time until somebody decides to tackle this. It's not just a question of horsepower.
I heard words about Retroarch on 3DS being looked on, but I doubt it'll even run the FBA core at all. At the very least there'll be Gambatte, Beetle PCE fast and FCEUmm. Maybe even TempGBA if we're lucky.