we will see ps3 emulator on the 360 soon
I definitely can say its impossible for PS3-FNR3 even, to run well (enough to play) on X360 (and vice versa), even though the game was "ported" to the PS3
Here we go again.... you can emulate any hardware regardless who is the manufacturer. It comes a huge cost of system resources. When comes multi-core, it helps emulation, but not that much. Today most of data are single process and only some are parallel process. That means the process need to wait for the result of previous of process in order to continue.
BLAH!!! come on guys the homebrew world on these systems hasnt even really taken off yet so the emulators are just a thing of dreams for now. ps3 will never emulate a 360 and vice versa and if some actually can write the code and execute it it will not not be fast enough to play. good enough for screenshots at best.