Wait what's the GW Sheik shenanigan?
You can fill two notches of his bucket with Sheik's up-b.
G&W's bucket is a dominating strategy in the teams meta, because it comes out super quick, it's armored, and I think once G&W grabs you he can land it guaranteed. (I think up throw is the guaranteed throw)
It kills really early.
Also if his teammate grabs you he can just hold you there while G&W buckets you.