It wasn't the Hymn of the Fayth alone that made Sin docile. Jecht was inside "holding off" Sin's devastating attacks, waiting for Tidus. Other villains wouldn't have had this.

As Mihen operation showed, Sin's long distance attacks packed a punch. Killing it from the inside was the only way, but no one would be likely to get that close to Sin without their dad inside holding off the beast.

Vayne is a pushover. The rooks on his ship were harder than it's 3 forms.