As for the production server always being correct, that means you're saying the production server was correct when cures did 9999999999999 damage and the development server did not reflect that change.
Which was patched in an emergency maintenance shortly thereafter. It's been how many months now? Torbillion has never had high magic accuracy on production server, if SE wanted it then they would of already. On the development server I can give myself 300,000,000 gil, I can't do that on the production server, so obviously there is a big where the moogle isn't offering me that option.

Torbillion / BC (and others) low potency and / or accuracy isn't a glitch or a bug, it's intentional or as the Dev's used to say "Working as Intended".

And seriously LULZ at your BST argument. The pet has to get TP first and won't be alive long enough on any content where you'd actually use the 33% def down effects. BLU on the other hand can do that once per 5min. Is a 25% def down / 25% attack down effect not good enough for you?