I'm pretty sure if someone actually HITS the GTS, it would fuck some shit up. If I remember correctly, the first time he did it, he broke Snitskys nose with it.
Same argument to you, try beating someone on the street with a pussy move like the "People's Elbow."
Steve McQueen you are such a mark. Both are mark moves, but one is iconic and one was being ripped because it was stole from KENTA.
Both wuld never work in real life because it takes both to participate to make that move work.
Hurting your opponent with your finisher is just sloppy workrate, try pro-wrestling before you make assumptions.