lol, they're not anything like G&W's kill moves.
I may have been exaggerating, but the point is that in any matchup where he can't get u-throw kills at a reasonable %, easily trap landings with f-smash (generally whether they have RCO lag or not), or copy an ability to unstale bair (lasers/arrows), he can't actually kill (he can maybe gimp some characters with really bad recoveries though)
And when you can't kill, it doesn't really matter how good the rest of your traits are. (he doesn't have anything particularly good besides bair and a good grab range + early follow-ups either)