I say it depends on wrestler to wrestler and why everyone does the Superkick but only one man does Sweet Chin Music, where the wrestler gives his/her move a special name ie Owens does the Stunner and Austin does the Stone Cold Stunner.
My choice for least protected is the Zig Zag
Definitely dont remember the last match that's finished. But I dont recall many people outside of dolph using the zigzag.
While shawn is the only one to call it sweet chin music, if we're getting super technical, even samoans have been using s variation of the super kick. For decades.
But a move that I literally just remembered. How bout the DDT? Sorry if it's been mentioned. But that moves barely even a high spot anymore.