Rest assured I won't make such an error again! To be honest I could care less about the exact type of aircraft (both have common powerplants with identical geometry to each other), I just thought it was an interesting picture, hence I put it initially in the spotter forum as I'd guessed that if there was any real mileage in it someone in the know would have already blogged it here in R&N.
I'm guessing that a failure of this nature is extremely rare (although that wouldn't console the poor buggers that experienced it), although I remember a thread some time ago about a 777 suffering an engine failure (again on the ground) and some expelled parts striking the opposite engine, though with only superficial damage caused.
The energy involved in sending a part out of one engine, through the fuselage, and almost straight through part of the other engine is mind boggling, but really illustrates some incredible engineering considering how long these things run for without any problems at all.