You mean other than it's a proposal and hasn't been built or tested yet? Or that it's a French system and not a U.S. one? Other than that, nope, you got me. Proof positive that a U.S. sub shot the TWA jet down.
Tsk tsk, shameless. You were deriding me for the concept of a SAM fitted to a sub. I never claimed proof of anything, but this is proof-of-concept. Show some class.